With Upstairs, Sparks get playful, percussive, and just a little noisy. Recorded at Musicland Studios in Munich, the track layers pounding bass, quirky synths, and literal broken glass (credited to producer Reinhold Mack!) alongside pipes and metallic clatter. Some have called it a “precursor to industrial music,” though Sparks keep it danceable and witty rather than bleak. Lyrically cryptic—half metaphor, half literal stairwell—the song stands out as one of the more experimental cuts on Whomp That Sucker. A KROQ radio favorite in 1981 and a strong live number in the early 80s, it still sparks debate on where humor, groove, and chaos collide.