American singer including extra text for cartoon character (7)
I believe the answer is:
simpson
'cartoon character' is the definition.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for simpson that I've seen before include "Homer - - (TV cartoon)" , "One of cult cartoon family" , "Animated character" , "Wallis - (Edward VII)" , "Edward's betrothed" .)