A holiday-style “Dave Koz & Friends” concert featuring saxophonist Dave Koz alongside vocalists Jonathan Butler, Haley Reinhart and supporting performers takes place at the historic Lansdowne Theater in Lansdowne, Pennsylvania. The show blends smooth jazz, R&B, pop and seasonal standards as the guest artists trade solo spots and collaborative arrangements, offering an accessible mix of instrumental saxophone and vocal-driven songs in an intimate theatre setting.