Transcribing solo piano to MIDI, even very complex polyphonic pieces, is fairly reasonable these days. You can try a demo from a not quite state of the art sys

Transcribing solo piano to MIDI, even very complex polyphonic pieces, is fairly reasonable these days. You can try a demo from a not quite state of the art system here: https://piano-scribe.glitch.me/ https://piano-scribe.glitch.me/ . (full disclosure, I was one of researchers who produced this system). I would argue that there's a lot more people that can take the output of the MIDI and turn it into a reasonable score than there are people that can listen to the raw audio and turn it into a reasonable approximation of the notes. Papers / dataset: https://arxiv.org/pdf/1810.12247.pdf https://arxiv.org/pdf/1810.12247.pdf [New dataset and slightly improved network] https://arxiv.org/pdf/1710.11153.pdf https://arxiv.org/pdf/1710.11153.pdf [Original Network]