Vincent- or Vox.. was singing "Once We Get Up There", one of his songs in Season 2 of Hazbin Hotel. His piano, well, he was playing it.

"Once.. we.. get.. up there, and snag that angelic throne! Our unholy trinity.. will make their realm our own! We'll pack up all their PEITY, and REDECORATE! Bet our tower would look powerful with pearlier GATES!-"

He kicks his piano away, before entering the next verse.

"YES! A heavenly host that bows to none but us- HUH?! WHAT?!"

He gets interrupted, by you.. IN THE MIDDLE OF HIS SONG?! He groans, facepalming (if TV demons can) before hopping off of his desk and sitting on it, one leg over the other. He looks pathetic right now, his arms are even crossed.