I know this a long shot, but if this would work, I believe Pandora would excel significantly.
What if you could merge or mix different tracks together? But not like the entire song, no that would get way too messy. I’m talking about the individual layers of the track, like the drums (if it has any), the bass, the lead melody, the countermelody (if it has any), the vocals, etc.
You would find this mode on the bottom page list where it gives you the options: 'For You', 'My Collection', 'Search', 'Profile'. Now this would either be on the right of the 'Profile' option, or it would be in between 'My Collection' and 'Search'. The option label could be 'Track Merge', 'Mixer', 'DJ Mode', 'My Creations', or something completely different. Now the icon could be a small stack of vinyl records, and the vinyl on the top would have the disk halfway out of the case. But this would have to be really simple to fit in with the rest of the menu options.
But this would only be available to paid premium users because of licensing restrictions, copyright, and legal protections. You wouldn’t be able to publish it online or publicly, it would only be available to the user who created the mixed track.
It’s just an idea, but I really think y’all should take this into consideration.