It's a compilation. It's consists of selections from Burnin' (Argo, 1958, w/ Barry Harris), Sonny Stitt & Bennie Green - My Main Man (Argo, 1964), and Sonny Stitt & Zoot Sims - Inter-action (Cadet, 1965). The sucky think is that there is room left on the CD - they could probably have included at least one complete album.