Lewis Capaldi proved exactly why he was the biggest-selling British artist of 2019 at the 2020 Brit Awards on Tuesday (Feb. 18), delivering a soaring performance of his breakout hit "Someone You Loved."Backed by just a piano, the 23-year-old superstar belted his ballad from a circular stage in the center of London's O2 arena, surrounded by red curtains that briefly switched to images of clouds after the song's bridge.