The Phonograph is quest item from The Legend of Zelda: Oracle of Seasons. A small wind-up instrument, it once belonged to Guru-Guru. After oiling the Windmill in the Eastern Suburbs with the Engine Grease, Guru-Guru thanks Link and gives him his Phonograph as a reward. The Phonograph is later played for the music-loving Deku Scrub, who will tell Link how to find the Noble Sword. This is the last item in the trading quest for the Noble Sword aside from the Sword itself.
Interestingly, at the end of the quest, Link does not trade this item away and retains it for the rest of the game.