12 Bar Blues Progression
The 12 bar blues progression, and variations on its theme, is the basis for all blues, some jazz, and many rock & roll songs. It uses all dominate 7th chords.
A major has 3 sharps: G#, C#, and F#. The key contains the following chords: A maj, B min, C# min, D maj, E maj, F# min, G# diminished.
Ab Major has 4 flats: Bb, Eb, Ab, and Db. The relative minor of Ab Major is F minor. Ab Major is tonally identical to and can be referred to as G# Major.
Allegro Non Troppo
Allegro Non Troppo is a musical term describing tempo. In Italian it means fast but not too fast.
The key of B major uses five sharps: A#, D#, G#, C#, and F#. The chords in B major are: B maj, C# min, D# min, E maj, F# maj, G# min, A# diminished.
Bb Major has 2 flats: Bb, and Eb. The relative minor of Bb major is G minor. Bb Major is tonally identical to and can be referred to as A# Major.
C major uses no sharps or flats. The chords in this key are: C maj, D min, E min, F maj, G maj, A min, B diminished. The relative minor of C Major is A minor.
Circle Of Fifths
If you start at middle C and work your way up the musical scale by intervals of perfect fifths you will eventually play all twelve notes, completing the circle.
Cold Modulation refers to the practice of changing keys in a musical piece by applying an immediate key change with no preparatory harmonic progression.
The key of D major contains two sharps: C# and F#. The chords in this key are: D maj, E min, F# min, G maj, A maj, B min, C# diminished.