Guitar Nylon: A Complete Guide

There's a particular warmth to a guitar strung with nylon strings — softer under the fingers, rounder in the room, a completely different conversation to the bright snap of steel. If you've ever wondered why a flamenco player's guitar sounds nothing like a folk singer's, or why classical guitarists never seem to use a pick, this is where that difference actually comes from.

What nylon strings actually are

A nylon-string guitar's treble strings (the top three, high E, B and G) are usually solid nylon or a similar synthetic monofilament, while the bass strings (D, A and low E) use a nylon or composite core wrapped in fine metal wire. That combination gives the whole instrument a softer attack, a rounder midrange and noticeably lower string tension than a steel-string guitar — which is exactly why you can't simply restring one as the other. The bracing, bridge and neck are built around a specific tension range, and going outside it risks real structural damage.

A relatively recent invention, for something that sounds so old

Before nylon, classical and flamenco guitarists used gut strings, made from animal intestine (the name "catgut" is misleading — no cats were involved). Gut was responsive but inconsistent, and vulnerable to humidity and temperature swings. Albert Augustine's company is widely credited with developing the first commercially successful nylon guitar strings in 1947, with classical guitarist Andrés Segovia closely associated with their early adoption. It's a nice bit of irony: the "classical" sound most people picture is actually a mid-20th-century synthetic upgrade.

Not one guitar — several distinct families

• Classical: wide neck, flat fingerboard, fan bracing, built for fingerstyle repertoire and a long, singing sustain.
• Flamenco: lighter build, lower action, faster response, a drier and more percussive voice suited to rasgueado and rhythmic tapping.
• Crossover: narrower neck, radiused fingerboard and steel-string-style ergonomics, aimed at players coming from folk or rock who want the nylon tone without relearning their whole hand position.
• Hybrid or stage nylon: built for amplification, with pickups and feedback resistance built in for gigging players.
• Travel and small-body nylon guitars: compact, portable, aimed at practice and songwriting rather than concert projection.

Where you'll actually hear it

Nylon strings are central to classical, flamenco, Brazilian and bossa nova music, but the instrument has travelled a long way beyond the conservatory. Antonio Carlos Jobim and João Gilberto built bossa nova's syncopated fingerstyle sound around it; flamenco virtuoso Paco de Lucía took the instrument into sophisticated fusion settings; classical guitarist John Williams remains a touchstone for the traditional repertoire. Willie Nelson's distinctive, well-worn nylon-string tone shows the instrument turning up somewhere you might not expect — country and roots music — proof this isn't a purely classical concern.

Tension matters more than gauge

Unlike steel strings, nylon strings are categorised by tension — low, normal (or medium) and high — rather than by thickness. Low tension feels softer and easier under the left hand; high tension resists the right hand more firmly and can offer more projection. Neither is objectively "better" — it depends on the guitar, the repertoire and what your hands actually get on with.

Modern sets also vary by material as well as tension. Some builders now use fluorocarbon or carbon trebles instead of plain nylon, chasing a brighter, more precisely intonated response. It's a genuine tonal option rather than a straightforward upgrade — plenty of players still prefer the warmer, slightly softer feel of traditional nylon strings.

Where to go next

Thinking about buying your first nylon-string guitar? Our complete buyer's guide walks through classical, flamenco and crossover options properly. New to the instrument entirely? Our beginner's guide is the gentler starting point, and if you've just bought a set of strings, our step-by-step setup guide covers fitting them properly.

Once you've heard a good nylon-string guitar played well, it's easy to understand why it's held its own for eight decades against every steel-string trend that's come along since.

Frequently Asked Questions