The 23-year-old singer delivered a simple, emotionally charged performance of his solo single "This Town," where he got to show off the power and complexity of his voice.
Rocking a brown, wool vest and white button-down shirt, the singer strummed his acoustic guitar while basked in soft light, giving the whole performance an air of sentimentality that sets his solo efforts apart from fellow 1D defector Zayn Malik's more stylistic solo stage appearances.
However, Horan spoke with ET on the AMAs red carpet where he admitted that he was looking forward to reuniting with Malik during the show.
"I haven't spoken to him in a few months and haven't seen him in a while," Horan shared. "So I'm looking forward to seeing him."
Horan also admitted that it felt a little weird appearing at an awards show without his former bandmates, explaining, "It's different because there's no one else around, but I've been enjoying it so far." Check out the video below to hear more.