The latest offering though is certainly not a mainstream endeavor..or so it seems. Watson is now in the business to compose music...and is showing remarkable success at it. (based upon the available tracks)
Music is in its most basic form, a few people will argue, mathematics. The relation of notes to each other equal a formula which might be more successful or less successful in the market. (based upon number of tracks sold)
In theory it should be possible to upload a number of popular songs, let Watson digest and analyze the melodies and have it produce a derivative of the prior uploaded songs.
It seems a bit far fetched of course...but song writers for the first time ever might have a competitor outside of their peers.
Article can be found here