B♭ major scale

How it is built

• Seven notes: whole, whole, half, whole, whole, whole, half. The half steps fall between D–E♭ and A–B♭.
• A is the leading tone. It sits a half step below B♭ and pulls hard toward it, which is why the V chord resolves home.
• Same notes as G minor. Start on G and the mood flips without changing a single pitch.