|This article does not cite any sources. (December 2009) (Learn how and when to remove this template message)|
|slit drum, temple blocks, Log drums, muyu, wood block|
A jam block is a percussion instrument which is a modern, hard plastic version of the more fragile wood block, and is sometimes referred to as a "clave block", "gock block" or "tempo block". It is sturdy, designed for hard hitting and is becoming more and more popular with modern drummers and percussionists, due to its durability and sound.
Jam blocks are usually attached to timbales and drum kits or are used as stand alone orchestra instruments. These blocks are often used in Salsa, Cuban, and Latin American music, although some modern drummers have made use of them in rock songs. Jam blocks are often used in the marching percussion idiom as well.
There are various colours of block, these colours usually represent the pitch and are different for each manufacturer. Many other manufacturers use LP's Blue-Red classification system. Larger jam blocks have a lower pitch than smaller ones. Other variations of this instrument include the stealth jam block and the guiro jam block, a combination of the guiro and low pitch jam block, jam tamb, a variation of a tambourine, blast blocks, sambango bells and granite blocks