Thesaurus (radio transcription service)

An article in that same issue of Broadcasting reported: [T]he initial plan is to offer to stations a library of approximately 400 units at the outset, including leading musical aggregations and soloists, along with dramatic skits, comedy teams and other diversified program arrangements.

[1]Prior to the announcement of the new service, "steady activity at the RCA Victor studios in New York" had involved NBC artists who were to be heard on programs provided by Thesaurus.

[1] An article in Sponsor magazine's January 15, 1951, issue illustrated how programs provided by syndication services had evolved from "just a collection of indexed records".

[2] The half-hour RCA Thesaurus program Concert Hall of the Air contained an average of eight songs per episode, with Arthur Fiedler directing the orchestra.

While the recording's introduction played in the background, the local station's announcer read from a script, "Ladies and gentlemen, the Concert Hall of the Air, Arthur Fiedler conducting.