Although some of his sides skirted the edges of jazz and his orchestra reached peak popularity during the early 1940s, Claude Thornhill’s chief contribution lay in the lasting effect his charts and ensemble sonority exerted on the cool jazz that emerged at the decade’s end. After completing studies at a music conservatory and working as a pianist with several Midwest ensembles, Thornhill joined the bands of Paul Whiteman and Benny Goodman in 1934 before serving Ray Noble’s American orchestra from 1935 to 1936, for which he also supplied arrangements. He contributed to a handful of Billie Holiday sessions, and his chart for “Loch Lomond” became a major success for Maxine Sullivan. While he first recorded under his own name in 1937, it was not until 1940 that Thornhill assembled a full orchestra whose distinctive timbre—marked by sustained horn tones that avoided vibrato and by the leader’s own delicate piano—set it apart. The group employed two French horns and a tuba, and on occasion its six reed players performed in unison on clarinets. Though some observers placed the band among the sweet rather than swing outfits because of its emphasis on ballads, the addition of Gil Evans to the arranging staff in 1941 drew widespread notice from jazz listeners.
Following military service from 1942 to 1945, Thornhill reorganized, keeping Gil Evans on staff and occasionally drawing on Gerry Mulligan scores while featuring altoist Lee Konitz, clarinetist Danny Polo, and trumpeter Red Rodney. Several of Evans’s bop-tinged arrangements for the ensemble became benchmarks, and the Miles Davis Nonet of 1948 drew directly from the cool-toned principles established by the Thornhill orchestra. By that point, however, the pianist’s most influential period had passed. He continued to lead groups on a part-time basis until his death, yet Claude Thornhill remained largely overlooked during his final fifteen years.
