How to play F#m7 (F# m7) on Bass

F#m7 is the F# m7 chord. It is built from 4 notes — F#, A, C# and E — which sit at the root, minor third, perfect fifth and minor seventh above the root F#. Written as a formula that is 1P – 3m – 5P – 7m. Those intervals, not the note names, are what give the chord its character: move all of them to a different root and you still hear a m7 chord.

F#m7 on bass is a movable shape with no open strings, fretted between fret 2 and fret 4, the shape spans 3 frets, 2 strings are muted and should not sound — damp them with the underside of a fretting finger. Since the shape uses no open strings it is fully movable: slide it one fret higher and you have the same chord a semitone up, which is the cheapest way to learn eleven more chords from one hand position.

The interval that defines this chord is the minor third between F# and A. Lowering the third by one semitone is the entire difference between F# major and F# minor, and it is the reason the chord reads as darker or sadder to most listeners. The added minor seventh stops the chord from sounding like a resting place — it leans forward and wants to resolve, which is exactly why it turns up at the end of a phrase rather than the start.

F#m7 belongs to 3 major keys, including D major, where it is the iii chord, A major, where it is the vi chord and E major, where it is the ii chord. That is the practical reason to learn it: a chord that is diatonic to several keys turns up constantly, and knowing which degree it occupies tells you what tends to come next. A iii chord in D major most often moves toward the tonic, so practising F#m7 in the context of D will teach you more than practising it in isolation.