Country fans were upset Morgan Wallen seemingly missed ... as opposed to his last two-year "One Night At a Time" tour. Set to launch in Houston, Texas, in June, Wallen will have a rotating lineup ...

Morgan Wallen ... was detailed by Wallen in a released statement that said he was "working on new music," even after just finishing his two-year-long "One Night at A Time" world tour.

A portion of every ticket sold benefits the Morgan Wallen Foundation, which supports programs for youth with a focus on sports and music. During the One Night at a Time TOur, MWF partnered with Mr.