Who else could it be? Louis, obviously delighting in the rocking propulsion of saxophonist Max Greger’s big band, enjoying himself on German television. Although the routines Louis created with the All-Stars made him extremely comfortable, he outdid himself when fronting a first-class big band.
I saw it happen on American television — perhaps the Merv Griffin Show, circa 1970, when he did “What A Wonderful World” before the commercial break, and came back to perform a truly exultant “Jeepers Creepers” afterward — in front of a studio band full of jazz players (Jimmy Cleveland and Bill Berry among them). I hope someone finds that clip, which begins with the band warming up after the break, Louis telling them, “That’s the scales! The fish will come later!”