Very good. The brass sound is spot on! (what did you use?).
The chord changes might be a bit cliche, the soloing might be overusing pentatonic, but this is what actually make it work in the context, this is what makes the instant connection with the audience.
Cool track, really enjoyed it.
Even if it was a commissioned track, if it wasn't under an exclusive license (that type of license should have at least three zeros at the end), you should be able to allow it's usage. You can allow the usage if people would credit the original product, or if you change a bit the flute solo; change a bit the arrangement; put some extra notes in the bass...etc (like Stravinsky did with his Firebird suites).