Why does a B major scale work against an A major chord?

1. What scales work over what chords?
2. What is the B Major scale?
3. Can you play a major scale over a minor chord?

What scales work over what chords?

The major scale can be used over major chords, and the minor scale can be used over minor chords. Both scales, however are considered modes using the names, Ionian and Aeolian respectively.

What is the B Major scale?

B major (or the key of B) is a major scale based on B. The pitches B, C♯, D♯, E, F♯, G♯, and A♯ are all part of the B major scale.

Can you play a major scale over a minor chord?

Yes, you can play a minor scale over a major chord because every major scale has a relative minor and vice versa. C major is relative to A minor since both contain the same notes (C D E F G A B). The minor relative of a major scale is the 6th. The major relative of a minor scale is the 3rd.