Man pages matching name play_looped_midi in section 3alleg4:

play_looped_midi.3alleg4.en	debian 10 / allegro4-doc
play_looped_midi.3alleg4.en	debian 11 / allegro4-doc
play_looped_midi.3alleg4.en	debian 12 / allegro4-doc
play_looped_midi.3alleg4.en	debian 13 / allegro4-doc