Sunday Jazz Continues…still checking out this classic jazz / rock from the Chicago Transit Authority aka Chicago
…. Were listening to Questions
- Arranged By [All Brass] – James Pankow
- Bass, Lead Vocals – Peter Cetera
- Drums – Daniel Seraphine
- Guitar, Lead Vocals – Terry Kath
- Keyboards, Lead Vocals – Robert Lamm
- Producer – James William Guercio
- Trombone – James Pankow
- Trumpet, Backing Vocals – Lee Loughnane
- Woodwind, Backing Vocals – Walter Parazaider
Whats Really Going On? 
Chicago recorded a Japanese version of this song in 1971 and released it as a Japan-only single.
Skip to 4:00 for the Japanese version.