The ninth episode of Young Sheldon 's fourth season is titled "" and originally aired on February 25, 2021. In this installment, Sheldon Cooper and his father, George Sr. , attend a high-stakes dinner with President Hagemeyer and a wealthy university benefactor named Gary O'Brien. Episode Plot Highlights
Sheldon discovers that playing the theremin (that weird instrument you play without touching) helps his anxiety. The episode features long, unbroken segments of pure audio ambience—Sheldon’s internal monologue mixed with eerie, wobbly theremin notes. For fans who create playlists or study to instrumental TV scores, this episode is a goldmine.
If you want the official audio: