I listened to a lot of Styles that contained the name [Chicago] but nearly all didn't have any brass instruments.

_FRAME.STY was about the only one that included Horns. it was suggested for the song 'Feeling Stronger Every Day'.

Memo: This smooth jazz style features a 10-part horn section backed by guitar, piano, bass, and drums. -Examples: Feels So Good, Breezin'. Local Hero, Genre "Intensity" Score=76/100
_FRAME.STY. Frame Smooth Jazz Groove
All RealTracks. Quintet. Tempo=80 (60-110)
Instruments: El.Bass, El.Piano, El.Guitar, HornSection, Drums
RD: LaPopJazzSlowEv16: a: Snare, HiHat b: Busy Snare, Ride :Craig Scott
RT909: Bass, Electric, SmoothPoppy Ev16 090 , Vernon Barbary
RT910: Piano, Electric, Rhythm SmoothBallad Ev16 065 , Jeff Lorber
RT3331: Guitar, Electric, Rhythm JazzyPop16thsMark Ev16 080 , Mark Lettieri
RT2781: Horn Section, Background CroonerBossa10-Part Ev 110 , Jim Clark

Not really at the [Chicago] level though in my view.

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