Why FretLens?

Guitar tab is wonderful for learning songs. But it has a blind spot: it shows fret positions, not note names. It's possible to play a piece beautifully for years without ever knowing which notes are in it.

FretLens is a small tool that replaces the fret numbers in a tab with the corresponding note names. The format stays the same — same layout, same technique markers — just letters instead of numbers.

Before:                        After:
e|--0--2--3--                  e|--E--Gb--G--
B|--0--3--5--                  B|--B--D---E--
G|--0--0--0--                  G|--G--G---G--
D|--0--2--3--                  D|--D--E---F--
A|--------                     A|---------
E|--------                     E|---------

Learning by playing

The idea is simple: play songs with note names instead of fret numbers. From the very first bar, it's a challenge — the notes feel unfamiliar, and it can be hard to tell where anything is on the fretboard. That's the point. Hide the original tab and try to play from the note names alone. It's uncomfortable at first, but that discomfort is the learning happening.

Little by little, things start to click. Not because anything was memorized, but because the same patterns keep showing up in the music — where the B sits on the low E string, that C is always one fret above it, that the same note appears in different places across strings. The fretboard gradually starts to make sense, not through drills, but through playing.

A familiar way to read

Note names are short letter sequences — C, Gb, Ab. Since they're just text, reading them feels natural and immediate. There's no staff to decode, no key signature to compute. It won't replace sight reading, but it does make note names accessible to anyone who reads tab.

A shared vocabulary

Tab players and sight readers often describe the same music in completely different terms — one talks in fret numbers, the other in note names. Playing with note-name tab can quietly bridge that gap. Over time, thinking in note names becomes second nature, and conversations with other musicians get a little easier.

Seeing the harmony

There's something nice about seeing a chord as note names instead of fret numbers. A shape like {0, 2, 2, 1, 0, 0} becomes {E, B, E, G#, B, E} — and suddenly it's clear which notes are in the chord, which ones are repeated across strings, and which one only appears once. It's a small thing, but it adds up.

FretLens just makes the notes visible. Everything else — the intuition, the little harmonic discoveries, the shared language — comes from playing.