It goes the other way too. After the success of Livin' On A Prayer, songwriters Rick Nowels and Ellen Shipley wrote Heaven Is A Place On Earth for Belinda Carlisle. I didn't realise it until it was pointed out.

The biggesr rip off at the mo are One Direction who've ripped of The Clash and Def Leppard (not the bands fault as they didn't write the songs) but the songwriters and producers.