The Mingus Quintet for the first round of the European tour were Jon Faddis (tp) Charles McPherson (as) Bobby Jones (ts) John Foster (p) Charles Mingus (b) and Roy Brooks (d). They can be heard here, from a concert in the Netherlands.
After a series of concerts, which lasted until August, Jon Faddis and Charles McPherson left the band and Mingus had to form a new group for the second round of the European concerts, starting towards the end of the year in Germany, Poland and Spain. Gene Santoro (Myself when I am real: the life and music of Charles Mingus) reflects on Mingus's choices for his new quintet:
"He kept thinking about updating Harry Carney's baritone sound, the deep-toned Ellingtonian mix he'd always loved. A young baritone man recommended by Paul Jeffrey, Hamiet Bluiett, came down to the club and got the nod, along with trumpeter Joe Gardner. And Cat Anderson, Ellington's last high-note trumpeter, took a break from his intense schedule of studio work to hit the road. Bluiett doubled on clarinet, and could do the raucous, old-timey pieces Mingus always loved to play with loving parody, as living history tableaux. An avant-gardist with leanings toward blues and free form, Bluiett also felt the exuberant pull of traditional jazz from early New Orleans, like other free-jazz artists. Mingus was their avatar, overtly straddling jazz history from before Duke to after himself."