"Dialogue" is a song written by #RobertLamm for the group Chicago and recorded for their album #ChicagoV (1972). On the album the song is over 7 minutes long and is divided in two parts. An edited version was released as a single in October 1972, eventually reaching #24 on the U.S. #Billboard #Hot100. A live recording of the full song can be heard in #ChicagoXXXIVLiveIn75. Part II was included in #GreatestHitsVolumeII (1982).
https://www.youtube.com/watch?v=80s3warB_c0