Crossover Thrash is a Subgenre of Thrash Metal that includes more punk elements than standard thrash, however still maintains much of its metal elements as opposed to Thrashcore (a marriage of Hardcore Punk and Thrash Metal). Crossover is more aggressive and faster then punk. Crossover incorporates slower paced thrash riffs mixed with breakdown riffs commonly used in hardcore and helped forge Groove Metal (or Post Thrash) which has a darker heavy metal aesthetic including guitar solos, classical music influence, and blues roots, and one known as Metalcore, which has a Hardcore Punk aesthetic, excluding guitar solos in favor of rhythmic guitar pulses.