Mandolin are used. Usually, courses of 2 adjacent strings are tuned in unison. By far the most common tuning is the same as violin tuning, in scientific pitch notation G–D–A–E, or in Helmholtz pitch notation: g–d′–a′–e″. Note that the numbers of Hz shown above assume a 440 Hz A, standard in most parts of the western world. Some players use an A up to 10 Hz above or below a 440, mainly outside the United States. Other tunings exist, including "cross-tunings", in which the usually doubled string runs are tuned to different pitches. Additionally, guitarists may sometimes tune a mandolin to
Jazz violin instrumental technique is "Stringprovisation" by Ari Poutiainen. The violin is a bowed string instrument with four strings usually tuned in perfect fifths. It is the smallest and highest-pitched member of the violin family of string instruments, which also includes the viola, cello, and double bass. A violinist produces sound by either drawing a bow (normally held in the right hand) across one or more strings (which may be "stopped" by the fingers of the other hand to produce a full range of pitches), "plucking" the strings (with either hand), or a variety of other techniques. In jazz-rock fusion styles, jazz