I haven't done a show of it, but have known about this style of music for a long time, and listening to mom's records of Martin Denny and an Esquivel Other Worlds record I thought looked fun because of the spacey picture on the cover.
It really is fun to put on as an alternative Easy Listening music, and I always thought of it as a serious music, with artists trying something different in their music. I think it must have influenced bands like the B52s later on.
Radio World, an organ of the broadcast industry, has an article about a Muzak distribution system used in the past.
"While subcarriers could be used to reach any small audience within a station’s coverage area, the technology became synonymous with Muzak throughout most of the 1960s and ’70s. While it was derisively termed “elevator music,” its bland, easy listening material was ubiquitous in retail and office settings of the day.
The audio signal for a subcarrier service typically arrived at the station’s FM transmitter site via an equalized telephone line. From there, it usually went through some form of audio processing, and on to the station’s subcarrier generator and then to the exciter. Stations broadcasting subcarriers had to have an FCC type-approved SCA monitor and take regular meter readings of subcarrier frequency, injection level and modulation."
The "Exotica" link just posted by Druid shows the album cover for Les Baxter's "Ritual of the Savage" which I actually have in my collection. In fact I have a whole stack of Les Baxter albums. Maybe it's time to play them again.