What @m1sta said... As a starting point for music production. Royalty free 100% original is a huge selling point if you know where is most needed.
The market for a tool like this is decent sized, specially for Electronic Music. You could also bake the technology in a VSTi or AU (although the webapp a la beatport might be much better), or even license the technology to big players in the music production space, like Apple, Yamaha, Sony, Steinberg, etc
Tip: ask here for opinions https://www.gearslutz.com/board/
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