Double stop Double stop In music, a double stop refers to the technique of playing two notes simultaneously on a stringed instrument such as a violin, a guitar, a cello, or a double bass. In performing a double stop, two separate strings are bowed or plucked simultaneously. Although the term itself suggests these strings are to be fingered (stopped), in practice one or both strings may be open. A triple stop is the same technique applied to three strings; a quadruple stop applies to four strings. Double, triple, and quadruple stopping are collectively known as multiple stopping. Early extensive examples of the
Quadruple reed Quadruple reed A quadruple reed is a type of reed by means of which the sound is originated in various wind instruments. The term "quadruple reed" comes from the fact that there are four pieces of dried palm leaf vibrating against each other, in pairs. A quadruple reed, such as the Thai pinai, operates in a similar way as the double reed and produces a timbre similar to the oboe. The Arabic "pii chawaa" is, "sometimes described as having a double reed though this is actually folded yet again, creating four layers of reed and thus requiring considerable lung power