C♯ major (enharmonic with D♭) uses seven sharps or five flats and is less common than its neighbouring keys, but it appears in jazz, soul, and R&B balladry where its warm voicings sit naturally under the pianist's hands. Its lush, full-bodied chord textures make it a favourite for jazz ballads and film scoring. C♯ major produces a rich sonority that is especially effective on piano.
Quality
Major
Defining Interval
Major 3rd & major 7th
Mood
Bright, stable
Common Genres
PopClassicalCountryRock
Harmony
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Characteristic Sound
Characteristic sound of C# Major
The major scale’s bright, consonant sound comes from its major 3rd and major 7th — the two intervals that most define a major key. All seven notes form stable triads, making it the most harmonically complete scale in Western music.
The seven diatonic modes — parallel modes starting from the same root with different interval patterns. Each mode has a unique character derived from the major scale.
The diatonic chords in C# Major are: C#, D#m, Fm, F#, G#, A#m, Cdim. These are the chords built naturally from each degree of the scale.
What is the Major?
C♯ major (enharmonic with D♭) uses seven sharps or five flats and is less common than its neighbouring keys, but it appears in jazz, soul, and R&B balladry where its warm voicings sit naturally under the pianist's hands. Its lush, full-bodied chord textures make it a favourite for jazz ballads and film scoring. C♯ major produces a rich sonority that is especially effective on piano.
What notes are in the C# Major?
The C# Major contains the notes: C#, D#, E#, F#, G#, A#, B#. This is a 7-note scale starting from C#.
How many chords does the C# Major have?
The C# Major produces 7 diatonic chords, one built on each degree of the scale: C#, D#m, Fm, F#, G#, A#m, Cdim.
What is the formula for the Major?
The Major follows the interval formula: W-W-H-W-W-W-H (W = whole step, H = half step).
Position in circle of fifths
C# is at the 7 o'clock position. Related keys: Ab (dominant), F# (subdominant), Bb (relative minor), Eb (supertonic), B (subtonic).