Ella, Frank, Billie, Duke -- WFIU's Afterglow has them all. The weekly, one-hour program of vocal jazz and popular song from the Great American Songbook, hosted by Mark Chilla.

Afterglow highlights the best of vocal jazz and popular song from the 1930s to today. Each episode explores a new topic about the greatest jazz singers. Whether it's the unlikely friendship between Frank Sinatra and songwriter Jimmy Van Heusen, the times trumpeter Clifford Brown worked with vocalists, or songs all about love, Afterglow tells the stories of the Great American Songbook.