Steel-string acoustic guitar

The steel-string acoustic guitar is a modern form of guitar that descends from the nylon-strung classical guitar, but is strung with steel strings for a brighter, louder sound. Like the classical guitar, it is often referred to simply as an acoustic guitar.

Steel-string acoustic guitar
A Gibson SJ200 model
String instrument
Classification String instrument (plucked)
Hornbostel–Sachs classification321.322-6
(Composite chordophone sounded by a plectrum)
Playing range
Related instruments
Fingerpicking a steel-string guitar
A C.F. Martin Eric Clapton model
Fender DG-41SCE
Epiphone PR-5E VS

The most common type is often called a flat top guitar, to distinguish it from the more specialized archtop guitar and other variations.

The standard tuning for an acoustic guitar is E-A-D-G-B-E (low to high), although many players, particularly fingerpickers, use alternate tunings (scordatura), such as open G (D-G-D-G-B-D), open D (D-A-D-F-A-D), drop D (D-A-D-G-B-E), or D-A-D-G-A-D (particularly in Irish traditional music).