The sound comes from Sister Act, the 1992 comedy starring Whoopi Goldberg as a singer hiding in a convent who transforms its struggling nun choir. Clips of the choir learning to sing in harmony became a staple reference for bad group singing online. This short burst of random notes spread on soundboards and in meme edits because it sums up a rehearsal gone wrong in three seconds. It remains popular alongside other choir reaction sounds like the hallelujah clip for marking joyful but chaotic musical moments.