Music Reference and Theory

Find details on scales, chords, arpeggios, chord progressions and how to play these on the guitar. All guitar references can be suited to standard or alternate tunings.

Knowledge Drills

Test your knowledge and strengthen your weak points with these music knowledge drills.

What's New

January 10, 2026
Intervals

Interval Reference

Added a new intervals reference, showing the common names, symbols, example note spans, as well as an audio sample of each interval.

Examples:

January 2, 2026
Scale DrillsChord DrillsInterval Drills

Multiple Choice Drills

Added multiple-choice answer support to the knowledge drills. This makes newer or more difficult topics easier to start with and provide a ramp-up to the full freeform entry version of each drill.

Not every drill will have both freeform and multiple choice, but when they do you'll see a 'I' or 'II' indicating the easier (multiple choice) and harder (freeform text) versions of the same content, respectively.

This update also includes multiple-choice versions of the existing interval, scale, and chord drills.

Finally, there's a new post on the blog, reflecting on the benefits of practicing fundamentals that might not seem immediately useful.

Examples: