Ooh, a calm, melancholy jazz song. How tonal! :D
First impressions - nice chords! I can't believe I'm saying this, but love the brass! It may be Garageband MIDI, but the way you use it really accentuates the mood of the piece. The drums I also really enjoy. So much panning and detail! That's an auto-A in my book :P Sax solos are another one of my weaknesses... you cater to me so well, even though you weren't trying to! (I think.)
So this is a song filled with an extremely relaxing ambience and masterfully crafted atmosphere, topped off with a few smooth sax solos! Nice. For you, the piece is quite tonal! I only heard it slip into a bit of atonality around the solos, especially in places around 2:00. Arrangement-wise, it progresses a little slowly, especially around 2:10-2:30, but overall, it feels like it's meant more to be background music anyways. I mean, you're so good at ambient, even your jazz is ambient! :D
Your production is top-notch, as usual. I feel like your music tech class has to consist entirely of you guys learning how to mix in Garageband 24/7, because this is so beyond any of the capabilities I thought Garageband had. Crystal-clear!
Nitpicks - although this is quite ambient, I would've preferred some more melodies. Maybe just a melodic motif, if you don't want to cram the ambient music with those dreaded tones! Currently, the most melodic material you have is the solos, and I just feel like the piece could use a bit more. :P
Great piece overall! Calm, relaxing, and a VERY fitting title. :D