# Collection & Library Don't Match **URL:** https://community.enginedj.com/t/collection-library-dont-match/69092 **Category:** Engine DJ (Mac & PC) **Created:** [May 15, 2026, 11:01pm UTC](https://community.enginedj.com/t/collection-library-dont-match/69092 "2026-05-15T23:01:01Z") **Posts on this page:** 7 **Page:** 1
### Author: ![ejthedjnycli](https://community.enginedj.com/letter_avatar_proxy/v4/letter/e/e95f7d/32.png) [@ejthedjnycli](https://community.enginedj.com/u/ejthedjnycli) #### Post date: [May 15, 2026, 11:01pm UTC](https://community.enginedj.com/t/collection-library-dont-match/69092/1 "2026-05-15T23:01:01Z")
Cannot figure out why my Collection has 18k tracks, but the LIBRARY on has 15K. Can’t seem to understand why? ---
### Author: ![djliquidice](https://community.enginedj.com/user_avatar/community.enginedj.com/djliquidice/32/18391_2.png) [@djliquidice](https://community.enginedj.com/u/djliquidice) #### Post date: [May 15, 2026, 11:45pm UTC](https://community.enginedj.com/t/collection-library-dont-match/69092/2 "2026-05-15T23:45:01Z")
Does this Collection have 18K tracks? ![image](https://community.enginedj.com/uploads/default/original/3X/f/6/f6e4a9bac13a47ebc7193af1f3652e7a472b0dbb.png) Or are you saying you havre 18K tracks total and only have 15K imported / registered in Engine? ---
### Author: ![ejthedjnycli](https://community.enginedj.com/letter_avatar_proxy/v4/letter/e/e95f7d/32.png) [@ejthedjnycli](https://community.enginedj.com/u/ejthedjnycli) #### Post date: [May 16, 2026, 3:24pm UTC](https://community.enginedj.com/t/collection-library-dont-match/69092/3 "2026-05-16T15:24:36Z")
This… ![Screenshot 2026-05-16 at 11.19.38 AM](https://community.enginedj.com/uploads/default/original/3X/3/6/36cebb649a277844327aa4353429fbe45a550720.png) ![Screenshot 2026-05-16 at 11.18.55 AM](https://community.enginedj.com/uploads/default/original/3X/d/2/d218e3dadab87cb5d838108eda4613212bbf91a3.png) Can understand the disparity… ---
### Author: ![Reese](https://community.enginedj.com/user_avatar/community.enginedj.com/reese/32/875_2.png) [@Reese](https://community.enginedj.com/u/Reese) #### Post date: [May 16, 2026, 4:16pm UTC](https://community.enginedj.com/t/collection-library-dont-match/69092/4 "2026-05-16T16:16:15Z")
LIBRARY is a playlist? ---
### Author: ![djliquidice](https://community.enginedj.com/user_avatar/community.enginedj.com/djliquidice/32/18391_2.png) [@djliquidice](https://community.enginedj.com/u/djliquidice) #### Post date: [May 16, 2026, 5:03pm UTC](https://community.enginedj.com/t/collection-library-dont-match/69092/5 "2026-05-16T17:03:57Z")
Yup. it sure is. To get my nerd 🤓 hat on: Technically speaking, `Collection` is a playlist also. It’s the top-most playlist in a tree-structure of nodes in the database. It exists in all Engine DJ instances. In the above image, @ejthedjnycli has the following structure. - Collection – the root node playlist. Contains all of the music registered inside of Engine DJ) - LIBRARY – a leaf-node playlist. Contains a subset of records within the above `Collection` root node. @ejthedjnycli , it seems like you likely dropped a 📂 named `LIBRARY` onto Engine DJ’s UI and it created the LIBRARY playlist. Is this correct? ---
### Author: ![Reese](https://community.enginedj.com/user_avatar/community.enginedj.com/reese/32/875_2.png) [@Reese](https://community.enginedj.com/u/Reese) #### Post date: [May 16, 2026, 5:33pm UTC](https://community.enginedj.com/t/collection-library-dont-match/69092/6 "2026-05-16T17:33:11Z")
Very true. The LIBRARY playlist just isn’t the total Collection, so they are simply different. ---
### Author: ![ejthedjnycli](https://community.enginedj.com/letter_avatar_proxy/v4/letter/e/e95f7d/32.png) [@ejthedjnycli](https://community.enginedj.com/u/ejthedjnycli) #### Post date: [August 11, 2026, 6:33pm UTC](https://community.enginedj.com/t/collection-library-dont-match/69092/7 "2026-08-11T18:33:00Z")
Yes. I realize that now. Thanks for your input and help.