Covers used to be more prevalent I think then now.Bands like the Beatles would cover rock standards quite often.Here is one example of a song that was covered a few times starting with the original and then a couple of the covers.All are great but I really like the Beatles and the one from Smith a lot.
The Shirelles - Baby It's You
http://www.youtube.com/watch?v=6gK6cHFYf2U
The Beatles - Baby It's You
http://www.youtube.com/watch?v=9UPfybIvVpg
Smith - Baby it's you
http://www.youtube.com/watch?v=hCD5GpmFHUg
The Shirelles - Baby It's You
http://www.youtube.com/watch?v=6gK6cHFYf2U
The Beatles - Baby It's You
http://www.youtube.com/watch?v=9UPfybIvVpg
Smith - Baby it's you
http://www.youtube.com/watch?v=hCD5GpmFHUg