Since then he has not released any new recordings .
Since then he has not has left the music industry , though he did briefly reunite with Rafferty to perform vocals on some tracks on the latter 's 1992 album On a Wing and a Prayer .
Since then he has not released any new recordings and has left the music industry , though he did briefly reunite with Rafferty to perform vocals on some tracks on the latter 's 1992 album On a Wing and a Prayer .