George Mann and Si Kahn’s new Labor Day CD features 21 songs by Si, a legendary songwriter who celebrated his 80th birthday this year. A tribute to workers and their unions, the CD showcases performances by both Kahn and Mann, as well as contributions from renowned folk artists such as Peggy Seeger, Billy Bragg, John McCutcheon and Tom Chapin. Today’s interview with Si and George originally appeared on the Heartland Labor Forum -- which airs weekly on KKFI 90.1FM Kansas City Community Radio – and includes songs from the new CD.