Guitarists typically use barre chords to voice chords in higher positions. Keys that don't have many open notes in standard tuning (hence few or no open chord fingerings) require many barre chords. The two most commonly barred notes are variations on the fingering shapes of A and E in first (open) position. The E-type barre chord is an E chord shape (022100) barred up and down the frets, transposing the chord. For example, the E chord barred one fret up becomes an F chord (133211). The next fret up is F, followed by G, A, A, B, B, C, C, D, E, and then back to E (1 octave up) at fret twelve.