Sweet Deceiver is the sixth studio album by Kevin Ayers and his last for Island Records. It is one of Ayers’ more rock-oriented productions, with the first side featuring the progressive material, while the second was more mainstream. Guitarist Ollie Halsall was now a key foil for Ayers and his playing on the opening track “Observations” is a clear demonstration of his dexterity. Elton John also joined the sessions, contributing some outstanding piano work to several tracks, including “Circular Letter” and “Toujours Le Voyage”.