Musical Moments was produced by the World Transcription Service in 1935 and 1936, and local Chevrolet dealers could pay (or, possibly were required to pay) for them to be played over their local stations. Music was provided by David Rubinoff and his Orchestra, who were veterans of The Chase and Sanborn Hour and Rubinoff had his own program on NBC during the same period as the Musical Moments broadcasts (Rubinoff's $100,000 Stradivarius violin was nearly as famous as he was). Announcing duties and the description of the latest Chevy models were handled by Hugh Conrad or Graham McNamee (Photo).  https://en.wikipedia.org/wiki/Graham_McNamee

Notes from OTRCAT.COM:   https://www.otrcat.com/p/chevrolet-musical-moments