High Quality Content by WIKIPEDIA articles! "I Thought I`d Seen Everything" is a rock song written by Bryan Adams, Eliot Kennedy and Robert John "Mutt" Lange for Adams 10 solo album 11 (2008). The song`s musical-style and production were heavily inspired by rock and pop music from the 1980s, and its lyrics chronicle a relationship. The song was released as a download only single in the UK on 17 March 2008.