Robin Trower

What: Legendary English rock guitarist, who first gained fame with Procol Harum.

When: Wednesday, 8 p.m. (rescheduled from May 11)

Where: Knitting Factory, 919 W. Sprague

Cost: $24

Call: TicketsWest outlets (509-325-SEAT, 800-325-SEAT, www.ticketswest.com).