B Half-diminished Bass Arpeggio
Bass arpeggio — fretboard diagram
B Half-diminished Arpeggio — Notes and Intervals
Notes: B, D, F, A
Intervals: 1P, 3m, 5d, 7m
Formula: WH-WH-2W
Number of notes: 4
Also known as: m7b5, ø, -7b5, h7, h
The B Half-diminished arpeggio contains 4 notes (B, D, F, A). Use the interactive fretboard above to explore this arpeggio on Bass with different tunings and fret ranges.
When to Use the B Half-diminished Arpeggio
Play the B Half-diminished arpeggio whenever a B Half-diminished chord appears in a progression. Unlike scales (which include passing tones), arpeggios guarantee every note you play IS a chord tone, making your solo sound harmonically precise and intentional.
Arpeggio vs. Scale
The B Half-diminished arpeggio uses 4 notes (B, D, F, A) while the full scale uses 7. The arpeggio is a subset — think of it as the skeleton of the scale. Practice alternating between the arpeggio and the full scale to develop a melodic vocabulary that mixes chord tones with passing tones.
How to Play B Half-diminished Arpeggio on Bass
On bass, locate B on the A string at fret 2. Span the 4 notes (B, D, F, A) across two to three strings using one finger per fret. Focus on even tone production between plucked strings and smooth position shifts.
The B Half-diminished arpeggio creates a tense, unstable sound built from minor thirds. It works over Bdim, Bdim7, Bm7b5 chords and is often used as a passing device to create dramatic tension before resolving to a stable chord.
Practice Routine
Practice the B Half-diminished arpeggio in different octaves, starting low and working up. Then try displacing the octaves — play the root low, the D an octave higher, and continue leaping. This trains your ear to hear the intervals (1P, 3m, 5d, 7m) in any register.
Bass Tips
On bass, use the B Half-diminished arpeggio as the skeleton for your bass lines. Target the root on beat 1, then use the other tones (D, F, A) on weaker beats to create movement while keeping the harmonic foundation solid.