Music Theory
Compound time, minor scales, intervals and more keys.
Unit 1 is free. The full course comes with Brainlag Music.
9 units, 37 lessons
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In simple time each beat divides into two. In compound time each beat is a dotted crotchet, and it divides into three quavers. So holds six quavers but is counted in two beats, one for each group of three.
Quick check
In , how many quavers make one beat?
Compound time, keys to four sharps or flats, both minor scales and intervals by type: Grade 3 theory, taught and practised.
Covers the ABRSM Music Theory syllabus. ABRSM is a trade mark of its owner; Brainlag is independent and is not affiliated with or endorsed by ABRSM. Every example and question is original. Results are Brainlag estimates, not exam results.
It follows the ABRSM Music Theory syllabus for Grade 3 (the syllabus from 2020, checked against ABRSM on 9 October 2026). Brainlag is independent and not affiliated with ABRSM.
8 of the 37 lessons are free, and each unit's topic test. Brainlag Plus opens the rest of the lessons, new questions on every topic test and the mock paper.
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About 2 hr 20 min of lessons in 9 units. Lessons take 3 to 5 minutes each.
Start Grade 3 Music Theory again from the beginning.
