Kpop: Red Velvet, Hyukoh, Heize, 3 KCONs (Red Velvet, BTS, Twice, NCT, SuJu, MMM, Gfriend, SVT, fromis_9, SKZ and many others)
Western: Too many to count. My most memorable ones were Ariana Grande (small venue, back when her first album was just released) and Michala Petri (classical recorder).