Co-composer Blaine once said that he’d been glancing at a book he’d found at the Beverly Hills Public Library, landed on a page about early streetcars captioned “Clang, Clang, Clang, Went the Trolley”, and bang was off to the races.
Orchestrator for this song—as well as the entire MGM Judy Garland musical Meet Me in St Louis—was Conrad Salinger. “Salinger’s arrangement was a masterpiece,” wrote producer Hugh Fordin. “His [was] a very special sound and style that has never been equalled in the American movie musical.”
Orchestrator/arranger/conductor Jack Campey pointed to this clip highlighting Salinger’s orchestration, sans vocals. Thanks, Jack.