gock

A rimshot is a percussion technique used to produce an accented snare drum backbeat. The sound is produced by simultaneously hitting the rim and head of a drum with a drum stick. The Complete Idiot's Guide to Playing Drums called the sound "part normal snare and part loud, woody accent", whereas the Continuum Encyclopedia of Popular Music of the World: VolumeII: Performance and Production called it "generally sharper, brighter and more cutting", as this produces large amounts of overtones. The stroke is used on the snare in rock, pop, and blues and on the tom-toms in Afro-Cuban music. The technique is very common in ska, reggae and rocksteady.In marching percussion there are three types of rimshots. The most common is the "normal" rimshot, which is played with the tip (bead) of the stick held about three inches from the rim. This produces a prominent, accented tone. The second is the "ping shot", where the bead is struck about one inch from the rim. This produces a high pitched sound. The third is a "gock" (also spelled gawk), which is produced by hitting the bead of the drum stick at the center of the drum while the rim is percussed with the distal shaft of the stick (near the hand). This makes a lower sound.
In Latin percussion, timbale players use rimshots near the edge of the head, but these sound very different from gocks in marching percussion.
In orchestral percussion, a rimshot is performed by placing one drum stick with the stick head near the middle of the drumhead, and the shaft pressed against the rim, and striking with the other stick. This produces a less powerful, but more precise and accurate rimshot than its marching cousin. This is known as a "stick shot".
The rimshot should not be confused with the cross stick technique, in which the tip of a drumstick is placed on the head near one of the bearing edges and the shaft of the stick is struck against the rim opposite the tip, thus creating a dry, high pitched "click" similar to a set of claves. The stroke is used to simulate claves in Brazilian bossa nova and also used for ballads in rock, pop, and country.Drummer Gene Krupa is credited with having invented the rimshot.

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