POPSは現在進行系で今でも欧米で使われている表現なんだけどｗ

2021 Holiday Pops | BSO - Boston Symphony Orchestra
https://www.bso.org/seasons/2021-holiday-pops
Holiday Pops (Tips, Reviews, Local Guide) - Boston Central
https://www.bostoncentral.com/events/holiday_pops_boston_pops/p1082.php

pop noun (3)
Definition of pop (Entry 6 of 8)
1
a: popular music
b pops plural : an orchestra that plays light classical and popular music
//went to hear the Boston Pops
also : light classical and popular music played typically by an orchestra
//a summer pops concert

https://dictionary.cambridge.org/ja/dictionary/english/pop

辞書にも乗ってて和製英語でもないんだけどｗ