One of the post-war talented and versatile pianist, ''Roland Hanna'' is also cruelly ignored by the average John Doe jazz fan. "Sir" not only featured with ''Mingus'' and many others, he also recorded a good 30 albums under his own name and/or formations, although never for major labels (hence he's now somewhat forgotten). Casual jazz listeners as well as ignoramus hardbop fans may try the excellent ''Freedom'' release ''Perugia'' for a starter.