NEW YORK -- With a trendy mask as her accessory — and also reflecting the current state of the world — Lady Gaga performed a medley of her songs, including the top-nominated tune “Rain on Me," at the 2020 MTV Video Music Awards.She was joined by Ariana Grande and number of background dancers — all wearing masks — as they performed “Rain on Me," marking the first time the No. 1 song has been performed on TV.