A double stroke roll is a fundamental drumming rudiment that consists of two consecutive strokes played with each hand. This means that each hand strikes the drum twice in succession before switching to the other hand. The pattern typically follows a right-right-left-left sequence, allowing drummers to develop speed and control. This rudiment is essential for various styles of drumming, including marching band, jazz, and rock. Practicing the double stroke roll helps drummers improve their coordination and fluidity, making it a valuable exercise for both beginners and advanced players.