Ahead of the release of their debut album Time, First Day Lions just shared their new single 'Mary Lou' which will most definitely light up your day with its sunny, upbeat vibe.

The music video for 'Mary Lou' is equally fun as the lads are having their best time while performing the song. Watch it below:

The indie rock band will launch their debut record Time with a special performance upstairs in Whelan's on the bank holiday Sunday, October 27. The official release is set for November 1.

First Day Lions was founded by childhood best friends Adam Cunningham and Adrian Rabbitte. With inspirations taken from The Beatles, Pink Floyd and Queen, they capture their stories and tell them in fresh yet nostalgic ways, coming on like a new and intoxicating force on the indie scene.