It took the members of Styx 35 years to come to terms with a song that tore the 1970s rockers apart at the seams. But last year, James “JY” Young, Tommy Shaw and the rest of the band started playing “Mr. Roboto” again in its entirety. It came down to the fans. Whenever they bought a T-shirt from the concert merchandise booth or passed the lighting console within earshot of the longtime lighting director, fans would bemoan the fact that the band skipped the song. “The merch guy who’s worked with us for years selling t-shirts got five to 10...