I'm looking for a website, iPhone app or other that I don't think exists. Something that could show all available versions of a song, a play list
of songs or, even better, an entire collection. Acoustic, live, orchestral, studio, rare, extended, even other artists' versions, etc. A google
search wasn't much of a help for me. Am I dreaming for such a database to exist?
The closest thing I can think of is Allmusic.com. You can search by song and it will
yield most versions of it. An alternative would be to do a search for the song title on YouTube. Hope this helps.