If you want to play A#7sus4 on the mandolin, start with its notes: A#, D#, F, G#. Its first mandolin voicing is a barre chord at fret 3: G string at fret 3 (index finger); D string at fret 3 (index finger); A string at fret 6 (ring finger); E string at fret 4 (middle finger). This is a 7th suspended 4th chord, and the sections below take you from the notes table to real fingerings, common mistakes and the musical contexts where A#7sus4 sounds right.
What notes are in the A#7sus4 chord?
The A#7sus4 chord is a 7th suspended 4th chord, and its notes are fixed: A#, D#, F, G#. Every voicing on every instrument uses these same notes, in some order and in some octave — change one of them and you are playing a different chord. The table below lists each note with its interval from the root A#, so you can see the structure of A#7sus4 at a glance. On the mandolin, the barre chord of A#7sus4 puts those notes under your fingers in the order the fingering lists them.
| Note | Interval |
|---|---|
| A# | Root |
| D# | 4 |
| F | 5 |
| G# | b7 |
The root is A#, the note the chord is named after and the note your ear hears as home. Above it, the intervals in A#7sus4 are 4, 5, b7. Learn those intervals rather than memorising the shape alone, because the same interval pattern transposed to another root gives you the same quality of chord anywhere. On the mandolin, the notes appear in the order the fingering dictates, but the set of notes never changes.
A#7sus4 sounds open, tense and expectant — a dominant chord with its 3rd suspended, waiting to resolve. That character comes straight from the intervals above, not from the instrument: the same notes on piano, guitar or ukulele carry the same colour, even though the voicing changes. On the mandolin, the barre chord voicing is the place to hear it in A#7sus4.
Comparing A#7sus4 with its closest relatives helps to fix it in your ear. In short, 7sus4 against sus4: A#7sus4 adds the flattened 7th G# to the sus4 triad. The 7th makes it a dominant chord; the plain sus4 is neither major nor minor. Hearing the comparison matters more than reading it: play A#7sus4, then play the chord it is compared with above, and let your ear find the note that changed. On the mandolin, the barre chord voicing is the place to hear it in A#7sus4.
How to play A#7sus4 on mandolin
On the mandolin, A#7sus4 has 3 voicings in the data below, and each one uses the same notes — A#, D#, F, G# — in a different place on the neck. The first voicing below is the one to learn first, and the alternatives cover the rest of the neck. Finger numbers below use 1 for the index finger, 2 for the middle finger, 3 for the ring finger and 4 for the little finger, and x means the string is not played.
The barre chord puts A#7sus4 in around fret 3: G string at fret 3 (index finger); D string at fret 3 (index finger); A string at fret 6 (ring finger); E string at fret 4 (middle finger). It barres across strings 1 to 2 at fret 3 with the index finger. The barre is the hard part: the index finger must press every string from 1 to 2 evenly at fret 3, so roll it slightly onto its bony side and keep it close to the fret wire. If the barre buzzes, move it a fraction closer to the fret and press from the arm, not the thumb alone. Strum or pluck it slowly first and check that every note in A#7sus4 — A#, D#, F, G# — sounds, with no buzz and no accidental open string.
For the barre chord, A#7sus4 sits in open position: G string at fret 1 (index finger); D string at fret 1 (index finger); A string at fret 1 (index finger); E string at fret 1 (index finger). It barres across strings 1 to 4 at fret 1 with the index finger. The barre is the hard part: the index finger must press every string from 1 to 4 evenly at fret 1, so roll it slightly onto its bony side and keep it close to the fret wire. If the barre buzzes, move it a fraction closer to the fret and press from the arm, not the thumb alone. Strum or pluck it slowly first and check that every note in A#7sus4 — A#, D#, F, G# — sounds, with no buzz and no accidental open string.
For the movable voicing, A#7sus4 sits in around fret 6: G string at fret 8 (ring finger); D string at fret 6 (index finger); A string at fret 8 (little finger); E string at fret 6 (middle finger). This voicing is comfortable because the fretted notes sit close together, from fret 6 to fret 8, so your hand stays relaxed and every note can ring. Strum or pluck it slowly first and check that every note in A#7sus4 — A#, D#, F, G# — sounds, with no buzz and no accidental open string.
Choosing between the voicings of A#7sus4 is a musical decision, not a right-or-wrong one. The open or low-position voicing rings the most and suits strumming, while a barre or movable voicing lets you slide A#7sus4 up the neck to any key without changing the shape. When you change chords, pick the voicing of A#7sus4 that sits closest to the chord before it — shorter moves between shapes mean faster, cleaner changes. Practise the change into A#7sus4 from the chord that comes before it in your song, not the chord on its own, because the move is the skill. On the mandolin, start with the first voicing above and listen for the notes A#, D#, F, G# in A#7sus4.
A short practice routine for A#7sus4 on the mandolin: play the first voicing four times slowly, checking each note, then change to it from the chord a fourth above A# and back, four times, at a slow tempo. Then play the second voicing the same way. If a note buzzes, stop and fix the finger placement rather than playing through the buzz — clean notes at a slow tempo become clean notes at full tempo, while buzzes practised fast become habits. Use the Mandolin Chord Finder to see the diagram for A#7sus4 while you practise, and the Chord Finder to compare it with the same chord on other instruments.
Common mistakes
These are the mistakes that most often make A#7sus4 sound wrong on the mandolin, and each one has a concrete fix. Work through them one at a time rather than trying to fix everything at once.
Holding it too long. A suspended chord that never resolves sounds stuck. Use it as a delay, not a destination. On the mandolin, start with the first voicing above and listen for the notes A#, D#, F, G# in A#7sus4.
Missing one string of a course. Mandolin strings come in pairs, and A#7sus4 needs both strings of each course to sound. If one string of a pair is muted by a neighbouring finger, the chord sounds thin. Check each course separately by plucking it on its own. On the mandolin, the barre chord of A#7sus4 puts those notes under your fingers in the order the fingering lists them.
Never resolving the suspension. The 4th D# wants to fall to D. Practise the 7sus4-to-7 move so the resolution is clean. On the mandolin, the barre chord voicing is the place to hear it in A#7sus4.
Playing the 3rd as well. If D sounds with D#, the chord clashes. The 3rd must be absent while the suspension lasts. On the mandolin, the barre chord voicing is the place to hear it in A#7sus4.
Where A#7sus4 is used
A#7sus4 is not a diatonic triad in any major or minor key, because it is an extended or altered chord, but its base triad belongs to the key of D# major, the key of F major, the key of A# major. a dominant chord that delays its resolution: play the sus4, then let it fall to the dominant 7th. As a dominant-type chord it also points toward D# major, the key a perfect fourth above A#, which is the tonic it most often resolves to. That is where A#7sus4 does its work: not as a home chord, but as a chord that creates movement and then resolves. On the mandolin, the barre chord voicing is the place to hear it in A#7sus4.
Because A#7sus4 is an extended or altered chord, it appears in progressions as a colour or a dominant rather than as a diatonic staple. Try it in place of the plain A# triad in a progression you already know, and listen to how the extra notes change the feel — that substitution is the usual way extended chords enter real music. The Chord Progression Builder lets you try A#7sus4 in a progression in any key and hear how it connects to the chords around it. On the mandolin, the barre chord of A#7sus4 puts those notes under your fingers in the order the fingering lists them.
The same chord on other instruments is covered in A#7sus4 on guitar, A#7sus4 on piano, A#7sus4 on ukulele, and the scales that fit over it are the A# major scale and the A# minor pentatonic scale. Learning A#7sus4 on the mandolin and then checking it on another instrument is one of the best ways to fix the notes — A#, D#, F, G# — in your memory, because the notes stay the same while everything else changes.
Practising A#7sus4
A short worked example makes A#7sus4 concrete. Play the four-chord progression D# – A# – Cm – G# in D# major, the key A#7sus4 most often resolves toward: D# – A# – Cm – G#. Play each chord for one bar at a slow tempo, and listen to how A#7sus4 sounds in that sequence — whether it feels like home, like a lift, or like a chord on its way somewhere else. Then play the same four chords in a different order, starting on A#7sus4 itself, and notice how its character changes when it opens the progression instead of sitting inside it. On the mandolin, the barre chord of A#7sus4 puts those notes under your fingers in the order the fingering lists them.
For a second exercise, play A#7sus4 and then the chord a fourth above A#, back and forth, four times each. That move — a chord and the chord a fourth above it — is the most common resolution in Western music, and it is the move A#7sus4 is built for when it acts as a dominant. Finish by playing A#7sus4 on its own, slowly, and naming each note out loud as you play it: A#, D#, F, G#. Naming the notes while you play them is what turns a shape into knowledge you can use in any key. Test yourself with the Practice Chord Quiz and keep time with the Metronome as the tempo rises. On the mandolin, the barre chord voicing is the place to hear it in A#7sus4.
Frequently asked questions
How do you play A#7sus4 on the mandolin?
The first voicing is the barre chord: frets 3–3–6–4, fingers 1–1–3–2, on the mandolin. That voicing uses the notes A#, D#, F, G#, and it is the one to learn first. The page above lists more voicings for A#7sus4, so you can choose the shape nearest the chords around it.
Is A#7sus4 hard to play on the mandolin?
It depends on the voicing. The first voicing of A#7sus4 on the mandolin is the easiest starting point, and the movable voicings further up the neck are harder because they need a barre or a wider stretch. Practise the first voicing cleanly at a slow tempo before you try the others, and the harder shapes will come more easily.
What is the easiest voicing of A#7sus4 on the mandolin?
The barre chord is the easiest voicing listed for A#7sus4 on the mandolin: frets 3–3–6–4, fingers 1–1–3–2. Learn that shape first, get every note ringing cleanly, and only then move on to the alternative voicings further up the neck.
What notes are in A#7sus4?
A#7sus4 contains A#, D#, F, G#: root A#, 4th D#, perfect 5th F and flattened 7th G#. There is no 3rd — the 4th takes its place until it resolves. On the mandolin, the first voicing above shows where that note sits.
How do you resolve A#7sus4?
Let the 4th D# fall to the major 3rd D, turning the chord into the dominant 7th, which then resolves to the tonic. That two-step resolution is the classic 7sus4 move. On the mandolin, the first voicing above shows where that note sits.