If the piece is only 3 minutes long, it's not a symphony.
Saxophones are reed instruments not normally found in a symphony orchestra.
A symphony can be written for any number of instruments, but it usually encompasses the range of strings, wind, brass and persussion.
Ernő Dohnányi Symphony No.1., G. Sgambati Symphony No.1., Robert Schumann Symphony no.3, G. Mahler Symphony no.5, H. Berlioz: Symphonie fantastique, D. Shostakovich Symphony No.9
The final movement of Beethoven's Fifth Symphony contain the first symphonic use (by Beethoven) of the trombone and the piccolo.
Why would they be any different to instruments in any symphony orchestra? Maybe their distinctive feature is being in Chicago?
Musicians.
Violin and piano
strings,woodwind,brass and precussion instruments
Beethoven's last symphony, the 9th, was also known as The Chorale. It was the first time any composer had scored a symphony for voice as well as instruments.
flut,clarinet,trumpet,trombone,and horns
The main ones are the oboe, clarinet, and bassoon.