A seminal work featuring "Wild World" and "Father and Son," this album solidified his place in music history and reached triple-platinum status in the US. Teaser and the Firecat (1971):
For deep-track enthusiasts, look for the 4-CD Box Sets (often found via boutique sites like Urban Aspirines ) which include rare demos and Elton John collaborations. Cat Stevens' Best Albums: A Buyers' Guide - Louder Sound