 A tablature (or tab) is a special type of musical score – most typically for a solo instrument – which shows "where" to play the pitches on the given instrument rather than "which" pitches to produce, with rhythm indicated as well.Tabulature is widely used in the 2000s for guitar and electric bass songs and pieces in popular music genres such as rock music and heavy metal music.This type of notation was first used in the late Middle Ages, and it has been used for keyboard (e.g., pipe organ) and for fretted string instruments (lute, guitar).