Chord Bb Major

On the piano, the notes of Bb are Bb, D and F. Bb is the root, D the major third and F the fifth. Said aloud, its notes are B flat, D and F. Bb uses one black key, Bb, and two white keys, D and F.

The gaps in Bb are not equal. Bb to D is four and D to F is three semitones. The frequencies in this position are Bb4 at 466.16 Hz, D5 at 587.33 Hz and F5 at 698.46 Hz, with A4 tuned to 440 Hz.

Your right hand plays Bb with the thumb, D with the middle finger and F with the little finger. From Bb4 to F5 the hand spans seven semitones.

In the first inversion, Bb moves up an octave and the lowest note becomes D, the major third. The fingers are 1 - 2 - 5. The second inversion starts on F, the fifth, and ends on D. The fingers are 1 - 3 - 5.

Move D in Bb down a semitone, to Db, and you have Bbm. It shares Bb and D with Gm, two of its three notes.

Bb shows up in seven keys. In Bb major it is the I, in Eb major the V and in F major the IV.