Beethoven - Sonata No.21 Waldstein 1st Movement 

Hi! At this time, I prepared Beethoven’s Waldstein sonata 1st movement. It was delayed because the length of this piece is long. Do you guys know this piece? This piece is one of the famous sonatas in Beethoven’s middle period. I hope that you guys like this performance! Always thank you for your support! I always check the pieces you guys recommended. Surely, I can’t do all of them. But, if possible, I try to play them. Then, Please leave the pieces which you want. Thank you! Have a good day!!

Don't worry about missing deadlines - I would much rather hear something that is fully prepared and not rushed

This is world class talent.

i have the deepest admiration for this sonata, its a milestone in the history of piano music, the way to right for the keyboard (orchestrally), to think of new ways of achieving effects of sounds and textures that had not been approached before, even by beethoven. A whole spectrum of sound is produced - (like the unique knocking rhythmic component of the first theme), as well as using the entire register of the keyboard with incredible effect - like at 0:25 a pianistic effect never seen before - a tremolo like sound reminiscent of stringed instruments. as well as harmonic innovations- like the second choralic subject that comes in the heavenly e major - (a third from the tonic) at 0:55, an interesting tonal harmonic relation. This sonata was dedicated to count Waldstein, who had been a great sponsor and and early supporter of beethoven, -And if i remember from Andras Schiff's masterclass on this sonata, he said it was count Waldstein who wrote to Beethoven: "may you go to vienna and inherit Mozart's spirit from Haydn's hands" ...and beethoven exceeds these expectations with the great middle period sonata's. You're playing is amazing as always, Kassia, and I look forward to the rest of the movements of this great sonata!

This piece was the first sonata Beethoven made when he got his fifth and final piano. He was testing the new abilities of the piano, that's why there are tons of really fast and difficult parts, but it came together so nicely in the end. One of my favorite Beethoven sonatas.

Easily my favorite mvt. from the sonata. Wonderfully and effortlessly executed.

YOU DID IT. THANK YOU AFTWR ALL THESE MONTHS. YOU ARE THE BEST!!!!!!

You and Rousseau are without a doubt the best piano channels around

Other pianists: Meme song, Coffin dance music Kassia: Beethoven Sonata Quality difference

Did you know that... First of all, Kassia is a robot created by Rousseau... Second, this sonata's name derives from Beethoven's dedication to his close friend and patron count Ferdinand von Waldstein of Vienna ! It is considered one of Beethoven's greatest and most technically challenging piano sonatas. The first section of the rondo requires a simultaneous pedal trill, high melody and rapid left hand runs while its coda's glissando octaves You are the best Kassia ❤️

I wonder if Kassia is always like “don’t mess up, don’t mess up” when she’s close to the ending even though she knows 99% of the time she won’t. Especially with really long pieces like this

Realizing how good some people are at playing to piano compared to me gives me the chills

진짜 이 채널 알게 되서 귀가 너무너무 호강하네요.. 여기서 피아노곡 진짜 몇백번은 반복재생한 것 같아요 ㅎㅎ 앞으로도 좋은 곡 많이 올려주세요^^

The first time i watch this magnificent piece was playing by the master Claudio Arrau

Please play Deubussy’s Arabesque no. 2?? Your no. 1 was beautiful Edit: I just realized that you haven’t played the no. 1 either. Both are great pieces

Man, you really nail those dynamics. And your right hand is like lighting on those runs. I've probably listened to this piece hundreds of times over the years. I'm truly impressed with this performance. Musicality is on point in my opinion.

When I'm depressed because I messed up a test, when I'm depressed because I'm fighting with a friend, or when I'm angry, watching kassia's piano playing video gives me strength and healing! thank you and i love you! kassia

Easily one of my favorite pieces from Beethoven. Great job, Kassia! Such a wonderful performance! I'm feeling really grateful right now, for living in an era where we can have access to this type of this marvelous things! Keep it up!

My favorite piano sonata! Its actually the reason why I started studying piano to begin with...and I put it in my top five favorite Beethoven pieces. And this is my favorite performance on youtube!

This inspires me to play again. I used to play 2-3 hours a day...I can’t believe I stopped. Thank you

One of the greatest sonatas in the musical heritage of Mankind, and one of the greatest creations of Beethoven! Thank you, great performance!

How beautiful. I am unashamed to write that I teared up not only from the exquisite piece, but your absolutely delightful playing. Such talent is rarely seen(both figuratively and literally) nowadays. Bravo to you and thank you for sharing your gift with the world.

You're the best piano RU-vidr on the platform. You deserve so much more attention ♥️

What a great interpretation, is so smooth and light

i just wanna thank you because i’ve started reading this a couple months ago and i’ve lost inspiration stuck in quarantine but your performances always inspire me and this video has totally revamped my love for this piece. you’re incredible!!! 💛

This is one of the Top 10 Beethoven hardest Sonatas, I'm impressed! God bless you!

how do learn this hard ass music so fast youre crazy

영상 보면서 모르던 곡들 많이 알아가요!! 진짜 넘 멋지신 것 같아요 ♡♡

8:52 from here to the end is my absolute favorite, I can listen to it over and over and never get bored. So beautiful.

You are one of the best pianists in RU-vid, Kassia! You are a virtuoso and you played it perfectly. You played one of my favorite sonatas! 👍💖

The beginning theme of this piece is my favorite Beethoven. Love the performance!

I do hope you feel better! And magnificent performance Miss Kassia

This is an amazing performance. The fact that you can keep a constant tempo and don't get slowed down whenever a "hard" part comes makes it sound even better. The rubato with slow part is done just right

this piece makes me happy

I didn't expect to like this piece as much as I did. It's really interesting because it moves between joyful /sorrowful and peaceful/dramatic undertones so smoothly that you don't even notice the transition. The chords are beautiful too.

Oh my god I'm actually here early. Thank you for all of your music! Very inspiring.

This piece is Pure Platinum, this is just so perfect, it's one of those pieces that you can't help but listen to it even if it's a bit long, further more, your rendition just made me fell in love with this piece again, thank you for your performance! ;}

I didn't expected, but Waldstein 1st movement is very incredible

I already know this is going to be good!!

It’s a pitty this piece gets so little coverage on RU-vid. This must be the first visualised Waldstein. Thanks for sharing 🙏

My time zone: 11:17 Me: peacufully in bed with my phone notifications turned on Kassia: BeEhtOVeen'S WeilDDteiN SoNAta FIRST MOVEMENT!!! Love the vids keep up the great work♥️👍🎹

I see no reason to get bored of a great musician

It is amazing that Beethoven created this music and that people can play it.

What a nice interpretation. You made me remember old times when my grandfather played that :’)

I was waiting for so long that if someone does this piece and YOU DID IT!!! And it was just about I was going to take my classes.

After lockdown (or even during) I want to see a Kassia-Rousseau duet, virtual, or in person. I think it's be interesting, great performance, I particularly like your expression with pieces like these, not just playing the notes, but connecting with them instead :)

I can not believe how talented you are! Please promise me never stop posting videos and playing classical music.

Every time I hear a Beethoven piece performed well, I think it's my favourite piece. Thank you! I don't think I've heard Wladstein played so well, not even by Horowitz or Rubenstein!

Great playing as always!

All I ask is to see the face of the person who helps me find inner calm at this time when the world is upset by covid19 and where our minds are constantly questioning. Thank you very much for this embellishment. The taste of good music knows no boundaries because I listen to you from my native village BENEBALOT in Cameroon. At the University my comrades thought that I was leaving the lodges because I softened my nights with MOZART, BEETHOVEN, BCH, CHOPLIN or VIVALDI

Parabéns, continue com esse trabalho incrível, estou paralisado pela clareza das notas e por como você trabalha todas as nuances e dinâmicas. Beethoven tem essa magia de desenvolver os temas de uma forma que é impossível prestar atençao em qualquer outra coisa além da música, sempre de maneira muito criativa. Parabéns, e força nessa quarentena

Wow that is a blistering tempo. Your technique is infallible, and musically this is also very appealing. Great job!

こんなに強弱を使い分け、かつなめらかさと音ひとつひとつを粒ただせることは失ってないような演奏できる人いるんだ…… 圧巻や……

You are amazing and Beethoven was an alien. Coming up with stuff like this..

300 years later, this music still goes hard

0:55 feels like somone hugged me

Wow. The swells and dynamics on this piece is just amazing. Litterly everything is amazing, the color matches with the tone of the piece and the voicing is just incredible.

Simply exceptional playing @Kassia ❤️ You can feel Beethoven's impatience and anticipation in this piece. Love it.

I love this piece! 😀 One day I'll learn it but it's too hard for the moment. It's one of my favourite Beethoven Sonatas! I was waiting for your new video! 😃 Magnificent playing 💕

업로드 알람 뜨면 왜 이리 반가운지ㅠ Kassia님 연주도 훌륭하지만 연주하는 손을 보는 것도 정말 좋아요~ 눈과 귀 둘다 즐거움!

LOVE this piece! Thank you soooooo much!

Flawless technique, great speed, relaxation, every note is crystal clear, perfect tempo. At the same time, you get the listener's attention in every piece you play (no matter the music period, every style suits you very well), dynamics are very polished and each and every note has an intention. And I almost forgot: you can do all this on an electronic keyboard... You have a huge talent and I'm glad to see that this channel grows bigger and bigger, you deserve it. If you took part in a top level competition, I'm sure you would win it; you certainly have the level of a international pianist, and of the very good ones. Congratulations.

Can I just say how cool this set up is with the special effects and light up piano

I really like this song ,i can listen to it over and over again😃

You're one of the most talented pianists I've ever seen here on RU-vid. Keep going Kassia, I hope you get the recognition that you deserve❤️😊

Notice the distance between the notes in the start, they are so equally separated, it just means that Kassia is playing in perfect tempo. Amazing!!!!

I put your music on while I do my class work but I end up zoning out and procrastinate even more. Great playing though!

素晴らしい演奏ありがとうございます。

Absolutely magnificent, I wish you were my piano teacher

Did you just play this with no errors? That's impressive.

Me gusta como dedicas tiempo para leer los comentarios

This is easily top 5. Easily. A whole new level of prodigy is needed to play this. Thank you for understanding Beethoven.

Una de las sonatas mas conoccida y dificil muy bien interterpetrada ,Gracias por ponerla

Mind has been totally blown by the complexity of the music, and your lively rendition of Beethoven. I think that man was bored out of his gourd when he composed this. Wowsers!!!! Thank you!!!

Sounds like a cartoon at the begin. Made my day. Thank you

この曲初めて聴いたけど素晴らしい曲ですね。熱情と並んで良い曲だと思います。毎日聴いてます。

와 10분짜린 또 처음듣네 잘 감상하겠습니당 ^^

you so good at piano!! thanks!!!

10 minutes of relaxation

It’s so nice how Kassia let’s us download the videos with having to have RU-vid Premium! I’m gonna visit this channel more than Rousseau’s now lol, road to 1 MIL subs!!!

I LOVE YOUR PERFORMANCES!!! THEY’RE PERFECT 😉😉😉😉😌😌😌🙂🙂🙂🙂🙂🙂

В первый раз услышал небольшую часть этой сонаты в одной из серий "Доктора Хауса", она мне так понравилась, что затем целыми днями прослушивал её полную версию. Особенно мне понравилась третья часть, надеюсь, что когда-нибудь и она здесь появится 😁

Y aquí el comentario en español. :D Kassia, maravillosa interpretación, como todas! No me canso de ver tus videos. Mágico, magnífico, esplendoroso!

I know the stress of knowing you can’t meet a deadline with a piece, and just know that we love and support you and your channel! So don’t stress over it, just play whatever you want whenever you want and be happy doing so! When I get down, or I start to lose motivation to learn a hard piece, I watch videos like yours and get inspired. So keep up the amazing work ❤️ and keep your mind healthy

AMAZING PLAYING!!!! I love this piece thanks for playing kassia!!!!

First great gate of kiev by rossesu, now this! Brilliant!

Hi kassia! I really enjoy your channel. I really like the mondays because I always hope a new video in the channel. Thanks to upload.)

Hi Kassia, You play beautifully, Beethoven is my favorite composer. I appreciate the hard work you do to perfect your craft. Thank you, Keith

流石ですね！すごい尊敬します😍😍

By uploading this piece, you gave me an introduction to what would become my favourite piece. For that, I thank you.

This is a true masterpiece, great performance.

I've always loved Claudio Arrau's interpretation of this masterpiece. Amazing work Kassia!!!!!

This is absolutely amazing! You did such a good job and I love your interpretions (as always)!

There's a playfully childish innocence feel to this piece. Well done! Thank you for performing this!

Beautiful! Thank you again for the wonderful work 💛💛🥰

С первой до последней ноты наслаждалась Вашей игрой! То, чем Вы владеете, это настоящее искусство.Блестяще!

Amazing!! 🤩 A beautiful sonata of Beethoven, it's also in Bridgerton!

I'm listening and loving it so far Kassia! The way your hands dance on the keys is beautiful. Hope you're doing well 💜

Me encanta esta pieza. Tocas verdaderamente bien, es un placer escucharte. :-)

You are what I wish to become as a pianist. Truly inspirational.