Samplab is an artificial intelligence-powered software that allows you to turn harmonic audio samples into MIDI.
By loading the Samplab VST3/AU plugin on a MIDI track in your DAW and dropping an audio file into it, the audio is sent to the Samplab server for processing. After this is completed, the MIDI with individual notes extracted from the audio will be returned.
You can now drag the result into the track which has the Samplab plugin on it to play the audio file as a virtual instrument, and/or make any changes to the MIDI.
The Samplab plugin is free to download for Windows and Mac in VST3 and AU formats.
More information: Samplab