track listing side 1 : side 2 : personnel ; styx dennis deyoung -- keyboards , vocals chuck panozzo -- bass john panozzo -- drums , percussion tommy shaw -- guitar , vocals , vocoder james young -- guitar , vocals ; additional personnel dan barber - horn steve eisen - saxophone mike halpin - horn john haynor - horn mark ohlson - horn billy simpson - horn ; production producer : styx ( dennis deyoung ) engineers : rob kingsland , gary loizzo arranger : styx mastering : ted jensen charts album - billboard ( north america ) singles - billboard ( north america ) the album has sold 3 million copies up to date .