If a performer sticks around long enough, even the truly great ones can't help but crank out a serious clunker, leaving fans in despair. What follows is the musical moments those otherwise capable artists should have kept to themselves, for our sake.

'Rapture'
--Blondie (1980)

For shame that it took a statuesque blonde to break rap music into the American mainstream. Whatever the hell Debbie Harry was "rapping" about -- a man from Mars, eating cars, don't strain your brain -- by rights her rhyming dictionaries should've been confiscated. 'Rapture' was doubly cursed when it reappeared in a 2005 mash-up with the Doors' bloated 'Riders on the Storm.'