I can’t think of many things cooler than playing a castle tour, and I can’t think of a sound more appropriate for said tour than Blackmore’s Night. Members Candice Night and Ritchie Blackmore’s (formerly of Deep Purple) combination of off-beat instruments is intriguing. The scary part is it actually sounds good. They are coming back to the U.S. after finishing their sold-out castle tour playing TheFillmore at Irving Plaza on Oct. 29 for $30 adv. or $35 dos. blackmoresnight.com.