"New" - AVRIL LAVIGNE - I'm With You - "Backing Track At Soundback"

http://www.soundback.co.uk/ will be featuring a backing track each day. Today's song and featured backing track is "I'm with you" by "Avril Lavigne"

http://www.soundback.co.uk/AVRIL-LAVIGNE-backing-tracks/I-m-With-You/3712.php

Tell me in a blog post what you know about Avril.