S2·E20 Myskery Melody

Poopdeck Pappy is suddenly frightened of a mysterious flute melody that wafts through the air. At first Popeye and Olive cannot hear the haunting melody, but Pappy tells them about when he was attracted to a young woman, a jewel of the sea, who tried to seduce him but turned out to be Wicked Seahag in disguise.