REO Speedwagon, Styx rock Show Me Center

Bruce Hall, left, Kevin Cronin and Dave Amato perform with REO Speedwagon Thursday, Dec. 5, 2013 at the Show Me Center. (Fred Lynch)

Rhythm guitarist Kevin Cronin performs with REO Speedwagon Thursday, Dec. 5, 2013 at the Show Me Center. (Fred Lynch)

Bruce Hall, left, and Neal Doughty perform with REO Speedwagon Thursday, Dec. 5, 2013 at the Show Me Center.

Dave Amato plays lead guitar with REO Speedwagon Thursday, Dec. 5, 2013 at the Show Me Center.

Bruce Hall performs with REO Speedwagon Thursday, Dec. 5, 2013 at the Show Me Center.

Kevin Cronin, left, and Dave Amato perform with REO Speedwagon Thursday, Dec. 5, 2013 at the Show Me Center.

REO Speedwagon performs Thursday, Dec. 5, 2013 at the Show Me Center.

Bruce Hall, left, and Dave Amato perform with REO Speedwagon Thursday, Dec. 5, 2013 at the Show Me Center. (Fred Lynch)

Keyboardist Neal Doughty performs with REO Speedwagon Thursday, Dec. 5, 2013 at the Show Me Center.

Bryan Hitt performs with REO Speedwagon Thursday, Dec. 5, 2013 at the Show Me Center.

Ricky Phillips, left, James "JY" Young and Tommy Shaw of Styx perform Thursday, Dec. 5, 2013 at the Show Me Center.

Keyboardist Lawrence Gowan performs with Styx Thursday, Dec. 5, 2013 at the Show Me Center.

Tommy Shaw of Styx delights in the concert crowd Thursday, Dec. 5, 2013 at the Show Me Center.

Bruce Hall, left, and Tommy Shaw of Styx perform Thursday, Dec. 5, 2013 at the Show Me Center.

Ricky Phillips performs with Styx Thursday, Dec. 5, 2013 at the Show Me Center.

Tommy Shaw performs with Styx Thursday, Dec. 5, 2013 at the Show Me Center.

Drummer Todd Sucherman performs with Styx Thursday, Dec. 5, 2013 at the Show Me Center.

Ricky Phillips performs with Styx Thursday, Dec. 5, 2013 at the Show Me Center.

Guitarist James "JY" Young, left, and bassist Ricky Phillips of Styx perform with the band Thursday, Dec. 5, 2013 at the Show Me Center. (Fred Lynch)

Lawrence Gowan, left, Tommy Shaw, James "JY" Young and Ricky Phillips of Styx perform Thursday, Dec. 5, 2013 at the Show Me Center.