Dedication: The Very Best of Thin Lizzy is a compilation album released by rock group Thin Lizzy in 1991. The only previously unreleased track was "Dedication", which was reconstructed after band leader Phil Lynott's death, using an old 8 track demo recording of a Grand Slam song originally recorded around 1985 and written by guitarist Laurence Archer. This track was the subject of a High Court case, as following Lynott's death Thin Lizzy released this track as a lost Thin Lizzy track, removing Archer's guitar and the writing credit from the track. Archer is now credited for writing this track.