Apocalyptica, the Finnish cello quartet, will release their seventh studio album on August 23. 7th Symphony will feature guest appearances from former Bush frontman Gavin Rossdale, Shinedown's Brent Smith, Slayer's Dave Lombardo, Flyleaf's Lacey Mosely and Gojira's Joseph Duplantier. The band will perform at this summer's Sonisphere festival on July 31. For tickets, log on to www.aloud.com.