The musical clef of the anus. Musical sounds produced by anal stimulation. Making a woman moan with pleasure as you give her tongue fuck her ass, along with clitoral and vaginal stimulation.
Similar to "banana split"- when a woman is getting buttfucked and another woman eats her pussy.
I played her in the anal clef, along with her twat, and she moaned from deep within, music to my ears.
Aimee was getting her anal clef played by Sophie while he fucked her.