Stuck In My Mind -

He tried the standard psychological "unsticking" techniques —grounding exercises, listening to the song in full to "complete" the loop, even vigorous physical exercise—but the jingle remained, louder than his own pulse.

The melody wasn’t even good. It was a three-note jingle for a long-defunct detergent brand— “Sparkle-O makes it new!” —but for Elias, it was the sound of a mental prison. It had been playing on a loop for forty-eight hours. Stuck In My Mind

Then, he noticed the glitch. The third note didn’t just ring; it clicked . it clicked .