(previews start on Oct. 6; opens on Oct. 20) Some very personal computing is afoot when the composer C�sar Alvarez and his band the Lisps offer a new musical inspired by Mr. Alvarez's boyhood obsessions. Fact, fantasy and science fiction mingle in this script, which unites an imagined Civil War soldier with the real-life artificial intelligence pioneer Ada Lovelace. Sarah Benson, whose intelligence is all-natural, directs.