Into the Rock and Roll Hall of Fame come April 18: Rush, Heart, Albert King, Randy Newman, Donna Summer, Public Enemy. Rush, being progressive rockers, might be the biggest surprise, even after they captured the fan vote which debuted this year. This was the first time they had been nominated, even though they have been eligible for induction since 1998. This was the second nomination for Heart (their first was last year.) They have been eligible since 2001. The rest of the 2013 Rock Hall class includes singer-songwriter Randy Newman, disco diva Donna Summer, blues guitarist and singer Albert King, and radical rappers Public Enemy. Producers Quincy Jones and Lou Adler will receive Ahmet Ertegun Lifetime Achievement awards (named for the founder of Atlantic Records) for their non-performing contributions to rock. Among the nominees not inducted: Joan Jett and the Blackhearts (now two-time nominees) Deep Purple, and Procol Harum (both groups having been nominated for the first time this year.) Induction ceremonies are April 18, to be recorded for broadcast on HBO on May 18.