I have hundreds of SONAR projects spread over five hard drives on three computers, and it's currently an uncurated mess (sort of like Apple's App Store, if you know what I mean). These projects include songs, narration, soundtracks, remixes, development systems, gear demos, etc. etc., some of which are finished and some of which are "open." Although I'm kind of like the guy with the super-messy desk who knows where everything is, it's time to get organized.
 
So, I figured I'd ask the Giant Forum Brain about how y'all organize projects so I can pick up some ideas. Do you do it by type of project? Date? Artist? State of completion? I'm hoping to gain some insights before I get halfway into re-organizing everything, only to realize that I did it all wrong and there's a much better way.

F:\Cakewalk Projects

• Bapu Projects
• Forum Monkeys
• CHB
• Other Collabs
  • Philz
  • Daryl
  • The Other Guys...

Under each folder (or sub folder) is a project folder for the song.
 
Simples. Like me.

mine is very similar to bapu
 
EDIT:
I forgot to add:
I have a .txt file called Music_Work_List.txt (using NoteTabPro) that is over 600 lines long
with each song tagged by date
 
Example of 1 song:
09.18.17
E:\sk_film\SK_Omnisphere\EDM\Zeng_Boing\audio
E:\sk_film\SK_Omnisphere\EDM\Zeng_Boing\mix
 
I can copy/paste E:\sk_film\SK_Omnisphere\EDM\Zeng_Boing\audio
Open Sonar > P > Audio Data CTRL+V
ALT+F+O (to open)
CTRL+V
 
then backspace until \audio is gone

and I'm looking at the project files.

This makes finding and opening any project very fast.
 

I use a 3 tiered folder structure:  first is by project type, then by artist name, then by song
 
Cakewalk Projects\
- Conservatory Projects
   - Performance Name
          - Song 1
          - Song 2
- Other Artist's projects
   - Artist 1 Name
         - Song 1
         - Song 2
    - Artist 2 Name
         - Song 1
         - Song 2
- My projects
   - Song 1
   - Song 2

With Numbers 00001 ... 19496 instead of projects names. And a database (Access) that contains all informations.
 
 

   I have settled on a file structure similar to those listed above. However I have also been spending (wasting?) a lot of time building up a SONAR spreadsheet. It has columns for Title, Artist, Key, Starting Chord, Style and Tempo. It also includes columns with hyperlinks to the project file and Word files for lyrics. There is a third set of columns for Drums, Bass, Rhythm Guitars, Lead Guitars, Lead Vox, Back-up Vox, etc...
   I started this to have an easy way to find projects that needed Bass if a Bass player is in the room or projects that need vocals if the pipes are working well on a given day, that kind of thing. I had no idea it would take so many hours (months) to complete.
  So now that I have gotten it pretty much up to date, I figure the bakers will re-vamp the browser to make this kind of sorting available within SONAR.
  

./CakeProjects
      Active/
          subdirs that make sense
              YYMMDD_DescriptiveName
      Archive/
          subdirs that make sense
              same names, this is where they get moved when I'm done
 

Hi. I do pretty much the same as Bapu (and several others). 
Cakewalk Projects, Year, Artist(s), Projects (in their separate folders).
All the best.

I have a folder for "albums," each with 8-10 written/demo/final versions saved inside.
Another folder for "Covers," with various cover songs I've done.
Another folder for "Ideas," which are unfinished drivel best forgotten.
Another folder for "Other people's projects," which have those organized by song.

I knew the Giant Forum Brain would come through. I think I'll end up combining some of these approaches, and end up with something that's tailored for doing a wide variety of projects.