McCann & Harris recorded live at the Montreux Jazz Festival, with Leroy Vinnegar (bass), Donald Dean (drums), and Benny Bailey (trumpet). The single “Compared To What” became a big hit.
My copy (from a record fair at Mill No. 5 in Lowell MA) is a mid-70s repress as it has the 75 Rockefeller Plaza address in the rim text, but doesn’t yet have the Warner Brothers corporate logo.