Styx guitarist Tommy Shaw has explained how he was able to let go of lingering resentment towards the band’s previous singer, Dennis DeYoung. The frontman’s penchant for bombastic, rock opera-style tunes clashed with his bandmates, and contributed to Styx’s hiatus from 1984 to 1990. The group reformed, but DeYoung, who had a reputation for being creatively controlling, continued to bristle with the other musicians. In 1999, the singer was dismissed from the band. Shaw has assumed some of the vocal duties ever since. The split from DeYoung was contentious, though in recent years the singer has …