The song with the most kudo for Purple's cat theme is - 

Cats In The Cradle, Harry Chapin posted by tay.  (lovely song too)

Followed by - The Tokens - The Lion Sleeps Tonight posted by Twyngwyn.

tay, when you are ready think of a new theme, pop it in the title of a new thread and just copy n paste the OP, changing the finish date to 4 days later.