KDP categories · Top KDP authors
Theory (Theory, Composition & Performance, Books): Amazon KDP category data
Amazon Books Best Sellers data for Theory (Theory, Composition & Performance, Books), updated Nov 2, 2026: median price $11.99, median 524 reviews, average rating 4.7 and a KDPTop opportunity score of 20/100 (highly competitive).
| Price range (middle 50%) | $9.99 – $19.91 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 2% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Only 2% of its best sellers are under 90 days old, fewer than in 93% of Books categories: established titles hold the list.
- Its median reviews are 30% of the parent category Theory, Composition & Performance (1,745), one of the easier corners under it.
- At $11.99 its median price is below 82% of Books categories, so it is a volume game.
Top 10 Theory best sellers
-
Complete Color Coded Flash Cards for All Beginning Music Students
by Alfred Music
- List rank#1
- Price$7.52
- Rating4.7
- Reviews5,698
-
Learn Faster, Perform Better: A Musician's Guide to the Neuroscience of Practicing
by Gebrian
- List rank#2
- Price$24.70
- Rating4.8
- Reviews488
-
This Is Your Brain on Music: The Science of a Human Obsession
- List rank#3
- Price$11
- Rating4.5
- Reviews3,085
-
Hal Leonard Music Flash Cards Set A | 120 Color-Coded Piano Flashcards for Beginners and Kids | Learn Notes, Rhythm, and Music Theory | Educational Practice Tool for Piano Students and Teachers
by Various
- List rank#4
- Price$8.99
- Rating4.7
- Reviews1,309
-
The Science of Music: A practical look at music theory
by Allen Van Wert
- List rank#5
- Price$23.99
- Rating4.5
- Reviews223
-
Music Theory For Dummies
by Michael Pilhofer
- List rank#6
- Price$12.15
- Rating4.6
- Reviews1,745
-
Alfred's Basic Piano Library Theory, Bk 1A
- List rank#7
- Price$9.99
- Rating4.8
- Reviews1,930
-
Alfred's Essentials of Music Theory, Complete (Lessons * Ear Training * Workbook)-------------- (CD's Not Included)
by Andrew Surmani
- List rank#8
- Price$16.19
- Rating4.7
- Reviews1,362
-
Alfred's Basic Piano Library Lesson Book, Bk 2
- List rank#9
- Price$9.65
- Rating4.8
- Reviews1,767
-
Piano Note Reading Exercises: Music Skills in 10 Minutes a Day, Student Workbook, How To Read Music, Sign 4,000 Notes
by Piotr Tadrzynski
- List rank#10
- Price$15.46
- Rating4.6
- Reviews486
Same niche in Kindle eBooks: Theory
FAQ
Is Theory a good niche for Amazon KDP?
Its KDPTop opportunity score is 20/100, which makes it highly competitive. The median best seller has 524 reviews and sells for $11.99.
How many reviews do you need to rank in Theory?
The median best seller has 524 reviews, and 2% of them have fewer than 100.
What do Theory best sellers cost?
The median price is $11.99; half of the best sellers are priced between $9.99 and $19.91.
Can new books break into Theory?
2% 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.