Wband director — Person who leads band
Wchart — A single piece of music
Wdragging — Unintentional slowing down of tempo
Wrushing — Unintentional speeding up of tempo
Wstandard — A commonly played melody or piece of music in jazz
Wswing — Anything that is in swing is played as follows: 2 quavers played as a triplet, with the first quaver played as a crotchet
Wset — A collection of charts
Wtempo — The speed of the music, usually in BPM (Beats per minute)