This is an Irish version of a story that also has Spanish, English, and German counterparts. I like it because though Lusmore isn't entirely a "Beast figure," since it's not a romance, he's still a deformed man who goes through transformation-and it's about the power of music.
Once there was a hunchback named Lusmore, who found it hard to walk. One dark night he was resting on his way home and heard sweet music coming from a ruined fort. The little voices inside kept singing over and over, "Da Luan, Da Mort!" (Monday, Tuesday!) He listened, but felt the need to add another phrase. Finally when he heard a pause in the music, he piped in, "Agus da Cadin!" (And Wednesday too!) There was a moment of silence, and then the voices started their refrain again, only with Lusmore's addition. The fairies burst out of their fort and pulled him in, waiting on him and thanking him for finishing their song. Knowing the danger humans can come to in fairy company, Lusmore was uneasy, but the fairies rewarded him by removing his hump.