"Sober Up" is a song by American indie pop band AJR, from their second studio album, The Click. Released as the album's fifth single, it features Rivers Cuomo, lead singer and frontman of American rock band Weezer, although certain radio stations instead play a version with band member Ryan singing Cuomo's verse. "Sober Up" became the first number-one song for AJR on the Billboard Alternative Songs, when it peaked at number one on the chart in March 2018. Similarly, it also makes Cuomo his first number-one song as a solo artist outside of Weezer.