Before Auto-Tune, before digital pitch correction, engineers were accidentally — and then very deliberately — playing recordings back at the wrong speed, and what fell out of those mistakes changed the texture of pop, soul, and hip-hop forever. From the chipmunk vocals that launched a novelty empire to the slowed-down tape manipulation hiding inside records you'd never suspect, this episode chases the strange physics of pitch and time across six decades of recorded music. It turns out some of the most human-sounding moments in your favorite songs were created by treating the tape like a rubber band.