Jonas Brothers with Demi Lovato singing in Rockwood, Ontario. 

her voice is so strong and audible despite all the screaming ..... Lovatic4life...

=) i love how demi's just chillin' on top of a car, sittin down, and her singing is still amazinggg.

It's just amazing how Demi could hit those really high notes. She's such an amazing singer. She's the best

2020/ 2024? Demi's voice is so powerful and she was a kid

her voice makes my life...

DEMI SLAYS MY ENTIRE LIFE

Holy crap! Demi's voice quality is so good, you can hear her CLEAR over all the audience, THEN, when they're playing SOS, you can't really hear the Jonas brothers....you can hear DEMI singing it! :)

Demi's voice is louder than all the boys and she's so small it's crazy.

demi has a really powerful and loud voice.... demi is amazing you can hear her louder than the guitars!!

I like how even though Demi has no mic and there are fans singing and screaming, I can still hear her singing

Demi is so amazing, even without a microphone ..

I love the Jonas Brothers they are amazing Demi I love her so much she's absolutely amazing as well:-) :-)

it's incredible that you can hear Demi over everyone. her voice is so powerful

She and her amazing voice, make me love her until now

demi es super talentosa increible como canta tan fuerte y no desafino ni una sola vez

it shows how strong demi's voice is, you can hear her over all the crowd but you can't hear joe or nick

imagine having this happen in your town😭👌

WOW, a true talent.. no need for auto-tune and any materials..

Awww, I remember this!! I remember seeing it on the Jonas Brothers website, I use to love going on that website all the time, lol ❤❤❤❤ Love this!

This is very cool footage. I gotta Say Demi is one of very few musical voicalist that sound as good live as they do in the studio! She has an AMAZING voice- it's stunning!

DEMI ❤️❤️❤️❤️❤️❤️❤️❤️❤️

Now this is why demi is my idol and i adore her, she can sing and i mean acturally sing, she is so caring towards her fans, she can act and also dance she has an amazing personality. Let's just agree that everything about demi is juts amazing :) x

she's so loud over everyone even without a microphone! it's awesome!

Joe slapped demi ass when she climbed out of the car

Omg this was so long ago I remember this was just down the road from me

Demi canta hermoso con o sin microfono INCREOBLE QUE VOZ DIOS LA AMO lovatic

Demi and Jonas Brothers has been the greatest singers i've known.. especially Demi ! :DD Im gonna be the Biggest fan forever!! they are all Amazing! like Freaakiin Amazinggggggggggggg!! :))) I loove Demi and the Jonas Brotherss!!!

i could still remember watching this when it was first upload ugh those memories i cant believe its been 4 years since this

This is the best.

Watching in 2019

thats how awesome and down to earth the jonas brothers and demi are! they really care for thier fans! i love them!

wow, demi's voice is so powerful :) love those guys ♥

Watching it in 2015 ..

omg! I'm crying 😭💕😍

they're so amazing! this is why i love them

demi has such an amazing and strong voice!! love her!

Wow, Kevin looks really different here.

Joe didn't hit Demi's butt she fell and he touched her back to make sure she was ok if you look closely instead of assuming the worse.

woww! tha's awesome! OMG! U R SO LUCKY, I CAN'T WAIT TO SEE THE MOVIE!

alright, just so you know, i was there for this and i live in this town. when they started to get up on the roof of the SUV, i was to the right, and i could clearly see them perfectly. joe didnt hit her butt. he swung his arm in front of it. if you watch really closely it's obvious. this was one of the best days of my life. and earlier that week, i met nick and joe. the whole time they were there was spectacular. :D

demi lovatoo si canta en vivo no como otras :)

I don't even know how to say this but I had this idea while watching the video that if Joe and Demi would've dated at that time they would've made a ridiculously hot couple. For some reason at that time for me Joe was hotter than ever even tough I don't like his hair :DDD

this... is... AWESOME!!! I would kill to have been there to see this! wow! Demi is officially the coolest singer ever.

aw, Demi tweeted this. I would love to have seen her once in person. I've seen the jonas bros twice already.... but i really want to see her!

I was there!!!

Estoy viendo esto en 2016

Demi and the Jonases are so sweet! They truly are.

This is soooooo awesome! I'm so jealous!

lmao I was there

They're really fantastic with their fans! It was an awesome performance and thank you for uploading! :) :) Demi's vocals are SO strong it's INCREDIBLE and garbo was there too! /happiness! Naw at Joe and Nick as well! :DD I think they've made MANY fans have a NEVER TO BE FORGOTTEN EXPERIENCE FROM THEIR YOUTH!

awh that was so nice of them to stop by and sing some songs =) coolness

hahaha I love how they got out of the car, sang a few songs for the fans and then went back to work. JB and Demi are awesome!

aww thats so sweet of her to do for the fans! she tweeted this

Awesome video! Thanks for uploading it! they are so nice to their fans!

i cant wait till camp rock 2 comes out ur soooo lucky 2 have been there!

gosh, youre so lucky! theyre amazing:) i love demi's voice so much!!!

i got to meat the jonas brothers like a month ago in san antonio. they were so nice and fun!!!! they r the sweetest guys ever!!!

OMJ ! I love them so much

Wow that was so nice of them! I love JB and Demi! Demi's voice is amazing! Like when Joe and Nick were singing SOS I couldn't even hear them but when Demi started singing it, I could hear her clearly. Thanks for posting this video!

Demi's voice is soo incredible!

OMJAD! so lucky. i love them, they're so nice!

i love demi lovato!! n her voice is sooo powerful.. love it!!!

demi's so amazing, would love to see her live sooooo much! :') xx

i loved it and i think it is sooo cool like you can hear demi's voice over tousands of people singing !

So awesome !!! You're so lucky ! Me i saw them in france cause' i'm french in Paris June the 14 , so amazing too !

and this is wy i love all of them their so AWESOME!

That was really cool, thanks for posting!

they are some of the nicest people to stop and do that for fans. :) i love them!

This was so sweet of them.

you can hear her so good. Her voice is amazing. It is to good!

dude she sounds AMAZING. just like the recorded version!! she is crazy talented.

I love this video!

i watch this again and again. she is really really talanted.

happy birthday nick and this is so cool!

god they are amazing. happy bday nick!

OMG LOVED THAT!

I love when she sings on SOS she sounds awesome

the best video.... thank you!! (:

Demi is soooooooooooooooooo Amazing she has such an amazing voice i

lovelovelove this.

I LOVE JONAS BROTHERS!!!!!!!!!!

I got to this from Demi's twitter. Good video. I love the jonas brothers and demi lovato! And i can't wait for camp rock 2. Oh look at big rob...he's so awesome! Lol

omg i remember watching this for the first time before... NOSTALGIA!!!

awesome! Love it! I wish I was there :(

you're the coolest celebs ever! sooo sweeet!

Demi has an AMAZING voice! oh my god, i love her voice!

my favorite people in one video!

this is so cool! I wish I was actually there in Rockwood!!!

AWESOME u r the greatest !

they are amazinggg!!! :)

Happy birthday Nick !!!!!!! God I love the Jonas brothers !!! Demi is amazing !! And Garbo Is awesome !!

yoyu are so lucky! i loved it

aww, they're so good to their fans!!

Now this is what I would call a pretty amazing concert!

DEMI has an amazing and really loud voice. i love them!

you are sooo lucky!! i would do anything to see them live in person.

Her voice is so powerful. It's amazing.

Love accoustic sets

thats so cool!! demi, you are AMAZING

wow that was amazing.