Nah, I think you're right on the money Kris. I love love love jazz and used to listen to a lot of trumpet players back in the day, and I heard what you mean about some flatness. The performance isn't bad but there are some intonation issues.
It's the second time I'm using this word tonight, but that trumpet is just relentless too. Need to add some breaks for variety. Right now it's just the solo trumpet going all the way through. Trade with the e-piano or guitar or something. Also seems like a LOT of rhythm section (piano, guitar, and vibes) with just a lone wind (trumpet). Could do with more of a balance. All that accompaniment is fighting with itself.
Source usage is also iffy. I'm a huge fan of jazz and I know a big part of it is soloing over chords, but this seems pretty liberal. I think having more strongly defined melodic sections to break up the solo sections would be good. Consider adding another wind, like a sax or clarinet or flute, to help the trumpet make stronger statements from the source.
NO (resub)