Totally Spies!
A Thing for Musicians
S1 E1:
The spies go undercover as the opening band on overnight pop-sensation Ricky Mathis' world tour in order to investigate what's making his fans act so strange. They eventually discover that Ricky's fans are being hypnotized by his music -- music that Sebastian (a bitter, ex-guitar playing record exec) has engineered in order to create an army of lyric-following zombies.