Instagram/Solar & Moon Byul & Whee Music MAMAMOO reunites for a summer 2024 U.S. tour! Solar, Moon Byul, Whee In & Hwa Sa hit 7 major arenas starting August 12. Get tickets now. May 2, 2026 AceShowbiz - The acclaimed K-pop girl group MAMAMOO is set to reunite for a highly anticipated U.S. tour this summer, marking a significant return to American stages. The lineup features members Solar, Moon Byul, Whee In, and Hwa Sa, who will perform at seven major arenas across the country. The tour will commence on August 12 at the UBS Arena located in Belmont Park, New York.