Thelonious
A pocket guide to music theory
About
This app simplifies music theory with visual aids for keys, chords, and scales. It helps users understand harmony and apply concepts to real playing, including guitar-specific features.
What's New in Thelonious
1.0
April 1, 2026
FAQ
What music theory concepts does Thelonious cover?
Thelonious covers major keys, scale notes, diatonic chords, relative minor and dominant chords, chord progressions, and harmonic movement. It also includes guitar modes and CAGED system material.
Is Thelonious suitable for beginners?
Yes, Thelonious is designed to make music theory easier to read, understand, and apply, making it suitable for those learning the fundamentals.
Does Thelonious offer guitar-specific features?
Yes, Thelonious includes guitar mode charts and CAGED system material to connect music theory concepts to practical guitar playing.
What devices is Thelonious available on?
Thelonious is currently available for iPhone and iPod devices.
How often is Thelonious updated?
Thelonious was last updated on April 1, 2026, with version 1.0. Future update frequency is not specified.
What is the age rating for Thelonious?
Thelonious has an age rating of 4+, making it appropriate for a wide range of users.
Does Thelonious have ads?
No, Thelonious does not contain advertisements.
What is the user sentiment for Thelonious?
Based on the available data, Thelonious has a perfect rating of 5.0 stars from 1 rating, indicating very positive initial user sentiment.
