In 1973, the National Association Of Progressive Radio Announcers released "Get Off," a 1973 vinyl record featuring dozens of musicians delivering anti-hard drug warnings. Along with personal warnings from Grateful Dead, Alice Cooper, the Doobie Bros., BB King, Ravi Shankar, the Staple Singers, and Frank Zappa, the crew of the starship Enterprise visits a planet ravaged by hard drugs. Just say know.