A# Diminished Seventh Guitar Arpeggio

A# Diminished Seventh Arpeggio — Notes and Intervals

Notes: A#, C#, E, G

Intervals: 1P, 3m, 5d, 7d

Formula: WH-WH-WH

Number of notes: 4

Also known as: dim7, °7, o7

The A# Diminished Seventh arpeggio contains 4 notes (A#, C#, E, G). Use the interactive fretboard above to explore this arpeggio on Guitar with different tunings and fret ranges.

When to Use the A# Diminished Seventh Arpeggio

Play the A# Diminished Seventh arpeggio whenever a A# Diminished Seventh 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 A# Diminished Seventh arpeggio uses 4 notes (A#, C#, E, G) 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 A# Diminished Seventh Arpeggio on Guitar

Root your A# Diminished Seventh arpeggio at fret 6 on the 6th (low E), or alternatively at 1st fret on the A string. This 4-note arpeggio (A#, C#, E, G) benefits from economy picking, combining sweep and alternate picking motions. Practice isolating two-string pairs to build coordination before linking the full shape.

The A# Diminished Seventh arpeggio creates a tense, unstable sound built from minor thirds. It works over A#dim, A#dim7, A#m7b5 chords and is often used as a passing device to create dramatic tension before resolving to a stable chord.

Practice Routine

Play the A# Diminished Seventh arpeggio as whole notes over a backing track or drone on A#. Focus on intonation and tone quality for each of the 4 notes (A#, C#, E, G). After a few passes, begin improvising short melodic phrases built from these arpeggio tones, connecting them with passing notes.

Guitar Tips

On guitar, practice the A# Diminished Seventh arpeggio using sweep picking across all six strings. Start with downstrokes ascending and upstrokes descending at a slow tempo, keeping each note separated rather than blurred. Mute unused strings with your fretting hand to keep the sound clean.

Related Resources

Explore A# Diminished Seventh in Other Tunings

• A# Diminished Seventh in Drop D (E-B-G-D-A-D)
• A# Diminished Seventh in DADGAD (D-A-G-D-A-D)
• A# Diminished Seventh in Open G (D-B-G-D-G-D)
• A# Diminished Seventh in Baritone (B Standard) (B-F#-D-A-E-B)
• A# Diminished Seventh in 7-string (E-B-G-D-A-E-B)
• A# Diminished Seventh in 8-string (E-B-G-D-A-E-B-F#)
• A# Diminished Seventh in Drop C (D-A-F-C-G-C)
• A# Diminished Seventh in Drop B (C#-G#-E-B-F#-B)
• A# Diminished Seventh in Open D (D-A-F#-D-A-D)
• A# Diminished Seventh in Half Step Down (Eb-Bb-Gb-Db-Ab-Eb)
• A# Diminished Seventh in Open E (E-B-G#-E-B-E)
• A# Diminished Seventh in Open A (E-C#-A-E-A-E)
• A# Diminished Seventh in Double Drop D (D-B-G-D-A-D)
• A# Diminished Seventh in Open C (E-C-G-C-G-C)

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