On: Bach to the Future – Humanising Music with Neural ...

[fxtentacle]

TLDR: They use a small LSTM model to predict the velocity and delay that a human player might have for each piano keypress based on the MIDI notes.

[tgv → fxtentacle]

Unfortunately, that makes you lose the style. It's an enjoyable read, if a bit long, but it's easy to skim the details.

For those wondering about other musical signatures: Shostakovich signed with D Es C H (Dmitri SCHostakowitsch, the German transcription of his name).