Who released the country song "Up Down"?

Morgan Wallen, featuring Florida Georgia Line, released the country song "Up Down." It became Wallen’s breakthrough hit and paired his distinctive vocal style with the highly recognizable country duo of Tyler Hubbard and Brian Kelley.

The song was written by Michael Hardy, Brad Clawson, and CJ Solar. Its lyrics celebrate a Friday-night country gathering filled with fishing, drinks, loud music, and making the most of what you have. The repeated “up down” hook gives the track its chant-like, party-ready identity.

"Up Down" first appeared on Wallen’s 2017 debut studio album, If I Know Me, and was later issued as a single. The collaboration helped establish Wallen nationally, while Florida Georgia Line’s appearance connected the song to the bro-country sound that dominated parts of country radio during the 2010s.

Some listeners identify the song simply as a Florida Georgia Line track because of the duo’s prominent contribution. However, Wallen is the lead artist, and Florida Georgia Line are the featured performers. That makes the stored answer the most complete canonical response.