A minor seventh chord is a minor triad with an added seventh interval:
◊ Minor 7th
An A♯min7 has an added minor seventh: A♯ – C♯ – E♯ – G♯
◊ Minor/Major 7th
An A♯m/M7 has an added major seventh: A♯ – C♯ – E♯ – Gx*
◊ Minor 7th Flat Five**
An A♯m7♭5 is an A♯min7 with a diminished fifth: A♯ – C♯ – E – G♯
* see double-sharp
** also called a half-diminished seventh chord
♫ More Piano Chords:
A#maj ▪ A#ma7 ▪ A#ma9 | A#min ▪ A#m7 ▪ A#m9 | A#dim ▪ A#°7 | A#aug ▪ A#+7 | A#sus2 ▪ A#sus4
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