Can anyone please help me identity this piece of music in the video

[u_chelva]

&t=8s

It seems like the music is superimposed over the video.

[lelle]

Haha that's weird. The footage looks like he's playing Chopin Waltz in E flat major Op. 18. But I have no idea what the actual audio is.

[quantum]

Haha that's weird. The footage looks like he's playing Chopin Waltz in E flat major Op. 18. But I have no idea what the actual audio is.

Nice catch. 

This?

[quantum]

Looks like this was the channel that originally posted the video.

Read the video description, there are clues to the sources.

To answer the question of the OP.  Again read the video description.

[geraldmsharp]

It is difficult to identifySonic exe exactly. Do you have the answer from the above clues?