The combo themselves include keyboardist Gerald Clayton, bassist Vicente Archer and longtime Scofield drummer Bill Stewart.

Jeff Tamarkin writing for Relix stated, "Scofield prefers clean lines, a marked swing (even notably present in the ballads) to push his melodies ahead and an uncluttered accompaniment that allows his leads to stand out without entirely dominating the proceedings.

"[7] Bill Meredith in his review for JazzTimes noted, "Combo 66 may be named for Scofield’s age, but it sounds as timeless as he does ageless.

"[8] Will Layman of PopMatters stated, "John Scofield makes this kind of album-length delight seem tossed-off, casual, easy-as-pie.

He wrote each appealing theme, and his worn-in guitar tone dominates every track like the voice of a favorite actor—his guitar sound is arguably the Morgan Freeman of jazz- wise and great to hear, never tiring but never dull.