C# Messiaen's Mode #7 Bass Scale
Bass scale — fretboard diagram
C# Messiaen's Mode #7 Scale — Notes and Intervals
The C# Messiaen's Mode #7 scale is a nearly-chromatic scale that serves as the parent for many other symmetrical systems. On Bass, the notes are C#, D, D#, E, F#, G, G#, A, A#, C. It represents divine authority and the vast, complex forces of the universe in Messiaen's musical language. Commonly used in Contemporary Classical, Experimental, Avant-Garde. Notable players include Olivier Messiaen. Use in complex, multi-layered compositions. Its near-chromatic density provides maximum harmonic flexibility.
Notes: C#, D, D#, E, F#, G, G#, A, A#, C
Intervals: 1P, 2m, 2M, 3m, 4P, 4A, 5P, 6m, 6M, 7M
Degrees: 1 b2 3 b4 5 #6 7 b8 9 10
Formula: H-H-H-W-H-H-H-H-W-H
Number of notes: 10
How to Play C# Messiaen's Mode #7 on Bass
On bass, locate C# on the A string at fret 4. Use a one-finger-per-fret approach starting from the root and span two to three strings. Keep your fretting hand relaxed and practice shifting between positions cleanly.
The C# Messiaen's Mode #7 scale contains 5 sharps (C#, D#, F#, G#, A#). This scale does not follow a traditional major or minor key signature, so reading from sheet music may require accidentals.
Practice Routine
Begin by playing the C# Messiaen's Mode #7 scale ascending and descending at 80 BPM using a metronome, one note per beat. Once comfortable, practice in thirds (C#-D#, D-E) to build intervallic familiarity. Spend 5 minutes daily on this pattern before increasing tempo by 10 BPM.
Experiment with simple two-chord vamps rooted on C# to let the characteristic intervals of the Messiaen's Mode #7 scale come through clearly.
Bass Tips
On bass, use the C# Messiaen's Mode #7 scale to build walking bass lines by targeting chord tones on strong beats and using scale tones as approach notes. This is the foundation of functional bass playing.
The C# Messiaen's Mode #7 scale contains 10 notes (C#, D, D#, E, F#, G, G#, A, A#, C). Use the interactive fretboard above to explore this scale on Bass with different tunings and fret ranges.
CAGED Positions & Patterns for C# Messiaen's Mode #7
The C# Messiaen's Mode #7 scale can be played in 5 CAGED positions across the fretboard, each based on an open chord shape (C, A, G, E, D). As a 10-note scale, it also lends itself to 3-notes-per-string (3NPS) patterns that facilitate legato playing and diagonal shifting. Use the pattern selector above to isolate each position.