Simplify the following text for a Grade 7 native English-speaking person.
Original: My Happy Ending is a song written and produced by Avril Lavigne and Butch Walker for Lavigne 's second album , Under My Skin ( 2004 ) .
Simplified: `` My Happy Ending '' is a song written and produced by Avril Lavigne and Butch Walker , and engineered by Russ T. Cobb for Lavigne 's second album , Under My Skin ( 2004 ) .