Complex sentence: Jessica was originally called "Walk With Me" when the band first made the song, they wrote this song about Jessica Alba as quoted by them when asked why they wrote a song about her "because shes fit".
Split into simpler sentences: Jessica was originally called "Walk With Me" when the band first made the song. They wrote this song about Jessica Alba-as quoted by them when asked why they wrote a song about her they said "because she's fit".