I think that there needs to be more strings at least. Pretty distinct. You can sorta get away with using alto sax sounds for tenor, but there are many saxophone players here, and they'd rage over that if they have decent ears.
This. If you want, I can record some notes for an alto sax instrument synth.
Brass instruments are overly hard to model.
Color some parts of it like the mouthpiece.
the mouthpiece of the Annoying Orangeet is the same color.I should correct myself, it's usually gold or silver.