KDP categories · Top KDP authors
Theory (Theory, Composition & Performance, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Theory (Theory, Composition & Performance, Kindle eBooks), updated Nov 2, 2026: median price $9.97, median 82 reviews, average rating 4.5 and a KDPTop opportunity score of 29/100 (highly competitive).
| Price range (middle 50%) | $5.36 – $10.81 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 15% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 18% of the parent category Theory, Composition & Performance (460), one of the easier corners under it.
- 15% of its best sellers came out in the last 90 days, more than in 76% of Kindle eBooks categories: readers here keep buying new titles.
Top 10 Theory best sellers
-
Music Theory: From Beginner to Expert - The Ultimate Step-By-Step Guide to Understanding and Learning Music Theory Effortlessly (Learn Music Step by Step for Self-Taught Players)
by Nicolas Carter
- List rank#1
- Price$6.98
- Rating4.5
- Reviews2,522
-
How To Read Music: For Beginners - A Simple and Effective Guide to Understanding and Reading Music with Ease (Learn Music Step by Step for Self-Taught Players)
by Nicolas Carter
- List rank#2
- Price$5.99
- Rating4.4
- Reviews920
-
How to Read Music in 30 Days: Music Theory for Beginners - with Exercises & Online Audio (Practical Musical Theory Book 1)
by Matthew Ellul
- List rank#3
- Price$9.90
- Rating4.6
- Reviews3,461
-
Learn Faster, Perform Better: A Musician's Guide to the Neuroscience of Practicing
by Molly Gebrian
- List rank#4
- Price$18.09
- Rating4.8
- Reviews488
-
Chord Progressions For Guitarists: How to Decode Any Progression You Play (Fretboard First)
- List rank#5
- Price$6.99
- Reviews-
-
The Guitarist's Scale Book - Over 400 Guitar Scales and Modes
by Peter Vogl
- List rank#6
- Price$4.99
- Rating4.6
- Reviews1,931
-
Triad Magic - An Introduction to Guitar Chord Theory
by Jerry Jennings
- List rank#7
- Price$8.99
- Rating4.5
- Reviews470
-
The Best Music Theory Book for Beginners 1: A Guide for Everyone: How to Read, Write, and Understand Music (The Best Music Theory Books for Beginners)
by Dan Spencer
- List rank#8
- Price$9.99
- Rating4.5
- Reviews475
-
This Is Your Brain on Music: The Science of a Human Obsession
- List rank#9
- Price$8.99
- Rating4.5
- Reviews3,085
-
Music Theory for Guitarists: The Theory Behind What You Already Play (Fretboard First)
- List rank#10
- Price$6.99
- Reviews-
Same niche in Books: Theory
FAQ
Is Theory a good niche for Amazon KDP?
Its KDPTop opportunity score is 29/100, which makes it highly competitive. The median best seller has 82 reviews and sells for $9.97.
How many reviews do you need to rank in Theory?
The median best seller has 82 reviews, and 53% of them have fewer than 100.
What do Theory best sellers cost?
The median price is $9.97; half of the best sellers are priced between $5.36 and $10.81.
Can new books break into Theory?
15% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.