Co-composer Blaine once said that he’d been glancing at a picture 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. The song’s unusual structure, which Martin based on 19th century tunes, was a showcase for Garland’s strong voice. It was nominated for a 1944 Academy Award for Best Original Song (but lost to “Swinging on a Star” from Going My Way, a catchy tune when Bing Crosby sings it, but no “Trolley Song”.)
Orchestrator for this song—as well as the entire MGM Judy Garland musical Meet Me in St Louis—was Conrad Salinger. “He had a very individual, sophisticated sense of harmony,” said our John in a 2013 interview. “It was those very subtle and exclusive touches that he gave to those numbers that set him apart… Little touches of instrumentation, like alto flutes and French horns, that gave those pictures a sound world all their own. His specialty was that high-class production number, the theatrical presentation of a popular song, or a balletic development of a number. In the hands of Salinger, you could be listening to Debussy or Ravel. He’s never going to be a household name, but that doesn’t diminish his stature.”
Orchestrator/arranger/conductor Jack Campey pointed to this clip highlighting Salinger’s orchestration, sans vocals. Cheers, Jack.