<P> `` Best Day of My Life '' is a song by American indie rock band American Authors . The song was written by band members Zac Barnett , Dave Rublin , Matt Sanchez , and James Adam Shelley , along with producers Aaron Accetta and Shep Goodman . `` Best Day of My Life '' was originally recorded for release as a single by Mercury Records and Island Records on March 19 , 2013 , and later appeared as the second track on the band 's third extended play American Authors ( 2013 ) and the third track on their debut studio album , Oh , What a Life ( 2014 ) . </P>
<P> `` Best Day of My Life '' is a song by American indie rock band American Authors . The song was written by band members Zac Barnett , Dave Rublin , Matt Sanchez , and James Adam Shelley , along with producers Aaron Accetta and Shep Goodman . `` Best Day of My Life '' was originally recorded for release as a single by Mercury Records and Island Records on March 19 , 2013 , and later appeared as the second track on the band 's third extended play American Authors ( 2013 ) and the third track on their debut studio album , Oh , What a Life ( 2014 ) . </P>
who sings this is going to be the best day of my life
who sings this is going to be the best day of my life
American Authors
American Authors