With a gift for improvisation and an ability to play in a wide range of styles, Bruce Hornsby is the consummate collaborator. Scan his CV, and it seems as if the versatile pianist and songwriter has worked with just about everybody. In addition to co-writing ballads with artists as varied as Don Henley and R&B great Chaka Khan, he has played bluegrass alongside Ricky Skaggs and teamed up with Bon Iver to create experimental indie folk.