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n. / v. a person, or used to describe a person of limited musical skill that believes his or her only harmonica, in the key of C, can be used to play any song, as well as to play continuously through every song, never acknowledging the vocalist or lead guitar player.
n. That wasn't a harmonica, it sounded so terrible it could only be a harmonicrap.

v. That harmonicrap player tortured the song, "Stormy Monday, he was playing over the vocals, and it wasn't even in the right key.
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