Leslie West, co-founder and guitarist of pioneering hard rock band Mountain, has died at age 75. The Los Angeles Times confirmed his death through a publicist. Rolling Stone and Variety are also reporting that West has passed. The news was initially shared by West's long-time associates at Dean Guitars, though no other details were given. The Times report mentioned heart issues, while Rolling Stone said West went into cardiac arrest on Monday at his home near Daytona, Fla., and "never regained consciousness" after being taken to the hospital. Dean Guitars CEO Evan Rubinson also offered personal condolences, describing West as...