Samplab has a desktop application that allows you to take audio and adjust the notes, the timing, and the key of the audio within the application. I also show you how to take that and convert that into midi. Check out these links below.
https://samplab.com/
https://www.mgthefuture.com/
https://www.cmpkits.com/
https://www.reasonstudios.com/
https://kushview.net/
If you want to support me and purchase my sample expansion library:
https://www.ebay.com/itm/163608995716