A Watercolour Concept? Maybe. While painting a city with a forest in the foreground. 

Martin your work is both interesting and hugely informative, and you generously share it with us all. In the UK we would warmly describe you and your work in a very complimentary way as 'Class in a Glass'! Cheers!

I think you're one of thee best artists in the world seriously you're Amazing I just discovered your channel and im obsessed 😍

I love your choice of colors! Thank you for sharing Martin🤗👍🏼

I love the complexity of your drawing and the relative simplicity of your painting and understated color palette. They make a great combination!

Schoenen Dank von einer alten Wienerin in Amerika. Ihr Stil gefaellt mir ganz besonders.

Your work is amazing. If you did coloring books or pdf downloads, I'd buy them in a heartbeat

Brilliant, every video you show builds on the prior. All of these continue to open my eyes and creative mind on my own work, thank you Martin

Rather than "shiny" the word I think you are looking for is "saturated", you could also say "vibrant".

Impressive. Thanks!

This is beautiful in it's own way. Amazing!

Mesmerizing... And inspiring... Thank you!

Love your work, can you show us how you clean your ink pens. Thank you Fran

Thanks again Martin for sharing your ink fine liner and paint scenes, you have a lot of enjoyable videos and inspiration for everyone 👍

I love the way you draw in such a relaxing manner. Thank you for showing us your artwork.

Awesome 👍

A nice piece of work, Martin. Thanks for sharing.

Evening.. Enjoyed your tutorial. Thanks for sharing your technique

*Colourfully shiny drawings win* . Definitely *More colour work* . Great video. Many thanks

Thanks, Martin! Starting to get a good idea of how you're coloring these cityscapes. Now I need to try to map the particular Daniel Smith colors you're using to my Cotmans..... Cheers!

Martin----great work. What type of paper are you using and are you wetting it prior to doing the watercoloring? Thanks so much for taking the time to post your work----love it!!

Guten Abend Hr. Lachmair. Ich habe mit ihnen zusamen drei bilder gemalt. Das hat mir grosse freude gebracht. Filen dank für ihre ideen und videos. Hr. Lachmair meine beleuchtung ist nicht so gut, sagen sie bitte was für beleuchtung sie verwenden und wo kann ich kaufen? Noch mal vielen dank und alles gute. Schöne grüss aus Deutschland!

So satisfying to watch your accurate work with watercolor!

Spoiler Alert 🙃 Love it!! Always enjoy watching you create! Have a wonderful evening Martin!