The 9-piece, Chicago-based jazz group Hypnotic Brass Ensemble join Cerys for a live session in the 6 Music Hub. Originally from Chicago, the brothers started as a street ensemble before recording in 2004. They have performed with Mos Def, Aquilla Sadalla, Phil Cohran and at the North Sea Jazz Festival. In late 2007 they recorded with Erykah Badu and Maxwell.