I may get some instrument names wrong, but hopefully you’ll know what I mean anyway.
The song has a bright and confident mood. I like that you established a consistent rhythm at certain points, which enhances the song’s catchiness. The brass melodies and harmonies are what makes the song so special to me. They have a nostalgic sound and their melodies are catchy, which is surprising considering that this is jazz.
I believe you said the piano was recorded first. As always, your piano playing is excellent. Other musicians might have just played the chords and melodies, but you played the piano with the same level of detail as if it was a solo piano song. With that said, there were times when I desired a short break from the piano. You could have made the brasses stand out more at times by making the piano less prominent, and you could have automated the piano’s reverb to make more space for the other instruments during busier parts of the song. Furthermore, I think you could have EQd the piano’s low end slightly more.
I love how you repeated the main melody using different instruments. It sounds great with the piano, but it sounds incredible with the brass instruments. I also love how the brasses switch from being support to becoming the focus.
The bass is well played, but I think you could have given your listeners a short break from it. I don’t think it’s essential to have in the introduction, for example.
The mix is decent; it has a nice reverby atmosphere and sounds full. However, when I observe all the details, I hear strange panning (with the brass), and sometimes the brass notes go too far down, and as a result, its lowest frequencies stand out and catch my attention.
At the end of the song, the release of the final notes is inconsistent, but it an unnatural sounding way. If you can’t perfectly mimic the release of real instruments, then I think the next best thing is to automate the releases to make them consistent, so it doesn’t sound like a mistake. One important thing I learned from making many designs is that when something looks like a mistake, it’s the primary aspect of the work that people who can “see” will notice.
This is one of my favorite songs from you, probably in the top five :D