This section is an introduction to music theory in the bluegrass context. It is written for people who can play a bit already (on any instrument) and want to understand the conventions of the music — what scales it uses, how chord progressions work, why bands play in the keys they do, what the working language at a jam actually sounds like — and the conventions used across this site.

The articles in this section are written to be read in order, but each one stands on its own.

1. Notation — the by-ear tradition, tab, music reading, and why bluegrass works the way it does
2. Scales and the Nashville Number System — the major scale, modes, blue notes, and the working language for chords at a jam
3. Chord construction — how chords get built, the bluegrass voicings, and the no-third tradition
4. Chord progressions and chord charts — the most-common bluegrass progressions and how this site notates them
5. Tempos and time signatures — bluegrass BPM ranges, the half-pulse convention, waltzes, and crooked tunes
6. Harmony — the trio and quartet vocal stack, instrumental harmony, and the chord-tone construction that makes bluegrass sound bluegrass
7. Approaches to improvisation — the melody-paraphrase tradition, lick-based playing, scale-based playing, and where contemporary bluegrass has opened toward jazz