Country singer Toby Keith headlined Donald Trump’s inaugural concert, playing three of his nationalist songs and “Beer for My Horses.” But there was a song missing, not just because it was one of his biggest hits, but because it was so right for the occasion. That song was “How Do You Like Me Now,” Keith’s 1999-2000 hit. The song is addressed to a former high school classmate who rejected—nay, ignored—the singer.