abbreviations
"Tr" - a traditional, usually academic definition or symbol
"Ex-" - example

ABCDEFGHIJKLMNOPQRSTUVWXYZ

B
the Bass voice in a choir.

BANNER SYNDROME (THE)
The anticipation of a cadential chord (either I or V, as in I/V, I/I), named from The Star Spangled Banner in bars 7 and 15

BASIC MATERIALS
The simplest and most limited elements of each of the 3 Structures of Music (Rhythm, Harmony, and Melody.) The Basic Materials will be subjected to a variety of Transformations

BEAT
The first half of any note-value

BINARY
The simplest and most fundamental structure of Rhythm, in which all groupings and subdivisions are by two

BLUES CHORD
A specific case of partial Diminution (a form of Chromaticism, a Transformation in Harmony),
     in which Orbit 3 is chromaticized (in this case the augmented sixth)
     and Orbit 1 (in this case the root, normally in the bass voice) is left diatonic
          (in the Key of C, a chord of F+6, usually and erroneously labeled F7).

BOX
See Melo-rhythmic box

BRANCH TUNING (SHORT AND LONG)
Tuning which uses the interval of the major third (5/4) see Short Branch Tuning and Long Branch Tuning.

BUCKLE CHORD
The chord with a smaller FRAME (a diminished fifth, between the sharpest and flattest notes of the system), which ties in the extremities of the Window and permits us to make a complete harmonic circle. see Tonal Function