Editing Seven-string guitar (section)

===Classical ===
Seven-string guitarists are utilized in playing traditional and contemporary "classical" repertoire. These instruments are essentially nylon-strung classical guitars with one extra (usually) bass string, and the tuning is most commonly: B1 E2 A2 D3 G3 B3 E4. Aficionados of the instrument have produced many new arrangements, traditionally six-string classical guitar pieces, and the seventh string may be retuned—to C or D, for example—to accommodate these arrangements. The use of this instrument in the classical world, along with other extended range instruments having 8, 9, 10, 11, or more strings, has become common enough that several noted string manufacturers now produce and mark string sets specifically for seven-string classical guitars (La Bella; Pyramid; d'Aquisto; etc.). For example, [[Napoléon Coste|Napoleon Coste]] arranged one of [[Franz Schubert]]'s pieces for guitar and vocal accompaniment, despite guitars being typically for solo performance at the time.<ref>{{cite web |url=http://www.naxos.com/person/Napoleon_Coste_27134/27134.htm |title=Napoléon Coste (1805-1883) |website=[[Naxos Records]] |access-date=20 April 2018}}</ref>