Top Definition
A term referring to a style of extreme electronic music which is a subset of speedcore and breakcore, based largely on sampled content.

Artists include Shitmat, Annoying Ringtone, Odaxelagina and Renard Queenston (as Renard).
Guy 1: "That song I heard last night in the club, you were there was like a mash-up of Tik Tok with some guitar riff, then in came some oldschool rap thing, all the while weird distorted noises were going off in the background...what the fuck kind of music was that?

Guy 2: "That's something called mashcore, it's really awesome!"
by AnonymusWantsPie October 08, 2012
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