About What a Time (feat. Niall Horan)

"What a Time" is a song by American singer Julia Michaels featuring Irish singer Niall Horan, from her fourth EP, Inner Monologue Part 1 (2019). The song was written by Michaels, Justin Tranter, Casey Barth, and Riley Knapp, and produced by Ian Kirkpatrick and RKCB. It was sent to Australian radio on March 29, 2019 as the second single from the EP and was the second most added song days after its release. It was nominated at the Teen Choice Awards 2019 for Choice Collaboration.

"What a Time" has been described as a slow pop song. Lyrically, "What a Time" has been referred to as "mourn[ing] the end of a relationship". The chorus, which contains the lyrics "I think of that night in the park, it was getting dark / And we stayed up for hours / What a time, what a time, what a time," has been described by MTV as "powerful".