I had decide to make a study of elevator music but it seems they have virtually eliminated that genre.
Muzak died in the 1990s if I recall correctly.
You can always turn to mood music records of the 60s and 70s
The Mystic Moods Orchestra - One stormy night (1966) Full vinyl LP
http://www.youtube.com/watch?v=v7e6_dp4Qe8
A1) A dream 0:00
A2) Minstrel boy 4:35
A3) Sayonara 7:26
A4) One stormy night 13:18
A5) In your arms 16:12
B1) Fire Island 18:39
B2) Aja toro 21:31
B3) Hot bagel 24:33
B4) Local freight 26:33
B5) Autumn leaves 31:26