A 1950s Kay "Upbeat" archtop ギター is a hollow-ボディ エレクトリックギター produced by the Kay Musical Instrument Company in the late 1950s, often found with a blonde 仕上げ. These models are known for their distinctive "Kelvinator" or "Kleenex box" pickups and unique Art Deco-style headstocks, offering a mellow, jazzy tone.