piano chord
Bm(maj7)
B1D♭3F♯5A♯7
Minor triad, major seventh — the tonic chord of harmonic minor.
What is true of it
Bm(maj7) is B, D, F♯ and A♯ — 1, b3, 5 and 7 counted from B.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
B in other shapes
Cm(maj7)C♯m(maj7)D♭m(maj7)Dm(maj7)D♯m(maj7)E♭m(maj7)Em(maj7)Fm(maj7)all 374