Constructing the F Major Scale
As naturals, the half-step between steps 3 and 4, and the whole step between steps 4 and 5, do not match the major scale step pattern.
Remember, a flat sign, lowers a pitch by a half-step.
Utilizing a flat sign for the pitch B, changes the B to B-flat, which in turn adjust the step measurements and now form the correct major scale step pattern, built from F.
The Key of F MAJOR has One Flat — Bb.
Since any pitch can be a scale’s tonic,
I asked Scroll to return and help me teach all 15 major scales.
Listen to F Major Scale