Fretlocks Single-String Capos Let You Play "Impossible Music" — Demo Video

A U.K.-based company called Fretlocks has introduced its new single-fret capo.

Think about that for a second; it's a capo for one string.

This could, no doubt, create opportunities for new chord shapes and licks that are (or were) impossible.

Fretlocks stick onto your guitar's fretboard while two tiny blades "fret" a single string; if it's difficult to picture this in your mind, don't worry, there are two demo videos below. There also are three different sizes of Fretlock, depending on string gauge.

Here's some information from a blog post about Fretlocks:

Guitarists across the world have always been in the hunt for ways to create new sounds. However, their songwriting has traditionally been limited by having five fingers on each hand (at most!), forcing them to create sounds within these constraints.

But now these limits are about to be stretched with the launch of a new hand-crafted, single-string capo. Unlike most other capos that go across all the strings, guitarists can now use Fretlocks to trap any string in any position they like.

“I came up with the idea when I was trying to figure out a way to play a particularly difficult line and needed extra fingers to hold some strings down," said co-founder Jonny West, who came up with the original idea. "After a number of different designs, I came up with the final Fretlocks design that actually works whilst keeping great sound quality.”

Fretlocks will be available very soon via They'll cost £15 for a pack of six and £25 for a tin of 12. For even more useful information about Fretlocks (including the answers to a few FAQs from guitarists), head here.

For more information, visit

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Damian Fanelli
Editor-in-Chief, Guitar World

Damian is Editor-in-Chief of Guitar World magazine. In past lives, he was GW’s managing editor and online managing editor. He's written liner notes for major-label releases, including Stevie Ray Vaughan's 'The Complete Epic Recordings Collection' (Sony Legacy) and has interviewed everyone from Yngwie Malmsteen to Kevin Bacon (with a few memorable Eric Clapton chats thrown into the mix). Damian, a former member of Brooklyn's The Gas House Gorillas, was the sole guitarist in Mister Neutron, a trio that toured the U.S. and released three albums. He now plays in two NYC-area bands.