The current band members are Bruce Roper, Deborah Maris Lader (since 1998), and Sue Demel.
After a chance meeting at a Guitar Center in Chicago, Illinois, Roper invited Nancy Walker to come hear him sing at a local Monday night sing-around at a nightclub, Beat Kitchen.
Roper had recently moved to Chicago from Normal, Illinois, where he had run a retail guitar store.
At that time, Walker was singing with a friend, Sue Demel, whom she had met through an ad for band members in the Chicago Reader.
Rich Warren would go on to having the Sons play countless times live on Midnight Special and has called the trio "Chicago's favorite folk group".