Dave Matthews Band kicked off its lengthy summer tour this weekend with a two-night run at Burgettstown, PAs Post-Gazette Pavilion. Fridays performance marked the first time since May 15, 2001 that the group performed without longtime keyboardist Butch Taylor, who unexpectedly left Dave Matthews Band last week. But, on both Friday and Saturday nights the core members of Dave Matthews Band were aided by trumpeter Rashawn Ross and longtime friend Tim Reynolds, who joined the DMB onstage for the majority of both its shows. The gigs marked Reynolds first appearance with the group since 2004, though he has played numerous duo gigs with Matthews since then. He has also been in the studio with the quintet for the first time since 1998s Before These Crowded Streets. In addition, the group rolled out a few new numbers over the weekend, including a version of Matthews solo cut So Damn Lucky, Sly & the Family Stones Thank You (Falettinme Be Mice Elf Agin), and a medley of Pink Floyds Money and Barrett Strongs Money (Thats What I Want). The group will appear at Camden, NJs Susquehanna Bank Center tomorrow.