Nocturne in B major Opus 40 Antonin Dvorak Download 'Nocturne in B major Opus 40' on iTunes
A masked performer, known as the 'Pianist Extremist' has been playing in front of riot police in Ukraine, but other musicians have taken to a blue and yellow piano to show the power of music as non-violent protest.
It's not just the 'Pianist Extremist' who's taking to the streets to perform - musicians are playing a blue and yellow piano (the colours of the Ukraine flag) as a soundtrack to non-violent protest.
A crowd gathers to listen to a non-violent protester.
The audience burns wood in a barrel to keep warm as they listen to one of the outdoor performances.
Onlookers wrapped in Ukrainian flags show their allegiance to their country.
Clutching an EU flag, the protesters want the country to be more closely aligned with Europe, rather than trading with Russia.
Even when the sun goes down, the protesters continue to play on the piano.
Perhaps the most famous of these performers, however, is the most anonymous - a performer known as 'Pianist-Extremist', who played Chopin in front of riot police back in December.