The Fb major pentatonic scale is a five-note scale that sounds bright, friendly and almost impossible to make sound wrong. If you want to improvise a melody or a solo in the key of Fb major, this is one of the best places to start. It has only five notes, it has no clashing notes, and its open, singing quality turns up in country, pop and classic rock. Let's get it under your fingers.
Here are the five notes of the scale:
Fb, Gb, Ab, Cb, Db
After Db, the scale comes back around to Fb, one octave higher. An octave is the same note at a higher or lower pitch. On guitar, it is twelve frets up the same string.
If Fb and Cb look strange, that's completely normal. Most players rarely see them written down. Fb is the same pitch as E, and Cb is the same pitch as B. They're the same sound with a different name, a bit like one person with two nicknames.
Why not just call it E? In the key of Fb, every note needs its own letter name. That keeps the theory consistent with the Fb major scale it comes from. The good news is that your fingers don't care what the note is called. You'll see in a moment that the root sits right on your open low E string.
Every scale follows a pattern of distances between its notes. Two terms will help you follow it:
The major pentatonic pattern is W - W - W+H - W - W+H. Starting from Fb, it works like this:
You can try this on one string. On the low E string, play fret 0 (Fb), then frets 2, 4, 7, 9 and 12. Those six frets give you the whole scale, ending on Fb again.
In theory terms, the formula is 1, 2, 3, 5, 6. That means root, major 2nd, major 3rd, perfect 5th and major 6th. Those are the first, second, third, fifth and sixth notes of the major scale.
This scale is built from the Fb major scale: Fb, Gb, Ab, Bbb, Cb, Db, Eb. It keeps five of those notes and leaves out two:
Those two notes are the ones that sit a half step away from their neighbours. Half steps create tension, a little rub that wants to move somewhere. Take them out and there are no half steps at all. Every note gets along with every other note.
The note that gives the scale its character is Db, the 6th. Listen for it when you play. It adds a warm, slightly wistful sweetness that you hear in country licks and classic rock solos. Try landing on Db and holding it over an Fb chord, and you'll hear the flavour straight away.
One more useful fact: the Db minor pentatonic scale uses exactly the same notes. When you start and rest on Fb, it sounds bright and major. When you start and rest on Db, the same notes sound darker and bluesier.
Because the scale comes from Fb major, it works over the main chords of that key. Here are the most useful ones:
A simple progression to jam over is Fb - Dbm - Cb - Fb. Give each chord one bar of four slow beats.
If you're playing the chords yourself, the Fb major chord uses the same shape and frets as an open E major chord. Same sound, different name, just like before.
As you improvise over this progression, aim to land on Fb when the Fb chord comes back around. Try landing on Db when the Dbm chord is playing. Your melody will sound like it belongs to the music.
Knowing where the root lives lets you find the scale anywhere on the neck. On a standard-tuned six-string guitar, Fb is here:
The open low E string is your easiest anchor. Fret 12 gives you the same note an octave higher, which is a great spot for solos. The 7th fret on the A string sits close to the 12th fret on the low E string, so you can link those two roots together in one area of the neck.
Start slow. Play the scale up and down the low E string from fret 0 to fret 12, saying each note name out loud as you go. Then put on a loop of Fb - Dbm - Cb - Fb, or ask a friend to strum it, and noodle using only those five notes.
Don't worry about speed or fancy licks yet. Just listen to how each note feels against each chord, and keep coming back to that sweet Db. Ten relaxed minutes a day will have this scale feeling like home before you know it.
For the bigger picture, read The Major Pentatonic Scale.