ID - Brief sting from CBS Radio Mystery Theater

[4820Tunes]

The brief bit of music below is used in the introduction of each episode of the CBS Radio Mystery Theater, right before the host, E.G. Marshall announces the title of the episode and the starring actor(s).

The other music used is the introduction is from Nathan Van Cleave's score for the Twilight Zone episode, "Two," but this 17 second clip is from another source and has not been identified.

The radio show had access to music from the CBS Music Library -- so it could be something from one of the scores there. It is not recognized by Shazam or YouTube.

Thanks for any help you can provide.