Oscillator: Pulse wave, with the Pulse Width just shy of full square. Layer in a bit of white noise to give it that airy woodwind sound.
Amp Envelope: Very short Attack so that it swells in quickly. Bring the Sustain down a bit and set a quick Decay. Altogether this will create a soft- air-blown attack transient. Set a quick Release, so that the note cuts off quickly when we let go of the key, but in a natural non-abrupt way.
Filter: Lowpass. Turn the cutoff down until you get the desired roundness. Boost the res a bit to give it a slight nasal-ness. Then bump up the key tracking so the sound gets brighter as you play higher.
Filter Envelope: Max Sustain, with a short Release, and just a bit of modulation amount. This will help our amp envelope’s quick Release sound more natural.
Chorus: Light and slow, to create some movement, make it less static. Start with 50% wet and adjust from there.
Reverb: The recording reverb may just be from the stadium. But you can add some reverb to match.