piano chord
Fmaj7
F1A3C5E7
Major triad with a major seventh: a half step below the root, an octave up.
What is true of it
Fmaj7 is F, A, C and E — 1, 3, 5 and 7 counted from F.
On an instrument that cannot reach all 4, the 5 goes first, in that order.