The final hour returns to “Summertime” with another set of transformations. Ellington, Parker, and Davis establish orchestral swing, bebop movement, and cool-jazz space; Ella Fitzgerald and Louis Armstrong add vocal warmth; and the Ravens carry the tune into R&B harmony. Jimmy Smith and Lou Donaldson give it a tougher organ-and-sax groove.

The Basin Street Boys’ “Summertime Gal” and the Jubilaires’ “As Summer Turns to Fall” broaden the theme beyond one song. Mingus, Garland, Morris Lane, Cooke, Byas, Saunders, Vaughan, and McDuff then show how one melody can live in bass-led jazz, piano lyricism, soul, tenor-sax swing, and organ blues. The closing hour makes clear that a standard endures because each artist bends it toward a different truth.

**Playlist**

– “Summertime” — Duke Ellington

– “Summertime” — Charlie Parker

– “Summertime” — Miles Davis

– “Summertime” — Ella Fitzgerald & Louis Armstrong

– “Summertime” — The Ravens

– “Summertime” — Jimmy Smith & Lou Donaldson

– “Summertime Gal” — Basin Street Boys

– “As Summer Turns to Fall” — Jubilaires

– “Summertime” — Charles Mingus

– “Summertime” — Red Garland

– “Summertime” — Morris Lane

– “Summertime” — Sam Cooke

– “Summertime” — Don Byas

– “Summertime” — Red Saunders

– “Summertime” — Sarah Vaughan

– “Summertime” — Bro. Jack McDuff