I've said this before, but it bears repeating here: It is too bad Bix didn't stick around Perfect records a while. Willard Robison needed a jazz band to succeed / replace the Nichols / Mole "The Red Heads," who quit the label after their "Baltimore" session in August, '27. He ended up with "The Chicago Loopers," with Bix and Tram. The "More Than Satisfied" date was supposed to be the first of many.
Bix sounds completely relaxed on these sides - utterly at home, not needing to prove himself or "make good" for anybody. His playing is conversational, free of stress. There is an intriguing similarity between Bix's musical stance here, and Annette Hanshaw's when she was at Perfect, and Willard Robison's own, on his solo piano/vocal sides.
I attribute this feel entirely to Willard, who was in charge of the studio, and whose easygoing attitude permeated the work environment. It seems the absolute opposite of the imperious, uptight Eddie King regime at Victor.
So yeah, I wish Bix could have become a "regular" around the Perfect studio. Would have done wonders for him, and for all of us.