Top Definition
A genre of music relating to the modern concept of hardcore music (it is also related to metalcore, emocore, grindcore, and many other "core" genres.)

The music is played primarily with screaming vocals and a whistle. Often it is merely 1 person whistling, then screaming.
Johnny is was totally headbanging to the awesome whistlecore, before he burst out laughing.
by cool4dude April 29, 2005
4 Words related to whistlecore

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