If "MPC" refers to something else — like a (given Sheldon's tech interests), a Minimum Price Contract (economics reference), or a misheard piece name — could you give a little more context (e.g., a line of dialogue, scene description)?
It sounds like you're looking for the piece from Young Sheldon Season 4, Episode 16 — likely the musical piece Sheldon plays or references. young sheldon s04e16 mpc
Just to clarify: is titled "A Second Prodigy and the Hottest Tips for Pouty Lips" . There is no official "MPC" in the title, but Sheldon does play Frédéric Chopin’s Fantaisie-Impromptu in C-sharp minor, Op. 66 during a key moment in this episode. If "MPC" refers to something else — like