Would appreciate someones help on this. Is there a site that if you just put a song title in will tell you what group recorded this and what album is it on? For instance the song "Mercy, Mercy, Mercy" a big hit for the Buckinghams in the 60's was originally written by a guy in the jazz group Weather Report named Joe Zawinul and performed originally as a jazz piece by Cannonball Adderley, and I'd like to see who else covered this and what album it was on. Is there any site that will find stuff like this out?