Spotify has Playlists and Songs. Both are domain-related concepts (the domain being music).
YouTube has Videos, Playlists, and Channels, again all domain-related concepts, referring to historical domain terminology (Channel as in "your private TV channel", where you create content for others to view).
So both services use terms apt to their use.
Channels and Tracks are not concepts/terms related to note taking. Thus, the analogy to YouTube's and Spotify's use of their own terms is broken.
We have the concept of 'tags' in our app, which are used by our users to delineate anything from company departments, social groups, locations, age bands etc. - basically anything they see fit. It saves us creating a mess of drop downs to try and cater for all edge cases, and they feel the freedom to think of them however they like.
[quiver]: http://happenapps.com/#quiver
Also, check out http://standardnotes.org/
You've got a good start to something; take two steps back, consume and digest the feedback you're getting, then use it to better your approach.
First make a notes app that people love. This will be harder than you think. Once you've done that and have enthusiastic users it will be much easier to move into other areas.
Hasn't this been the Evernote Recipe For Disaster?
Better to slightly misuse/expand an existing know term like projects or notebooks to cover more than it does now, than to invent a new term that covers all the meanings that apply, but whose meaning is initially unfamiliar to people.
E.g. "my way is da best, you should do WHAT I SAY"
Though the one I listed is the first lemma.
Also, it's inconsistent. Youtube organizes channels because it is a video app and people coming from tv immediately understand. Spotify uses tracks because it is a music app and the term track has been synonomous with song since probably the first record player.
Its a good try, but just mashing up two concepts into one causes confusion
I don't manage projects with a notes app. I don't create tracks with a notes app. I don't create channels with a notes app. I don't create playlists with a notes app.
It's pretty and functional; play to your strengths instead of trying to create new brand vernacular.
model it after something in the real world before you appropriate words from another paradigm