Growing up is never easy, even when you score your first Number One single at 19 years old. On Maddie & Tae’s debut album, Start Here, the country newcomers look back over a half-decade’s worth of boyfriends, dreams, schoolyard bullies and fishing dates gone awry. The 11-track album, whose songs were all co-written by Madison Marlow and Tae Dye during their teenage years, comes to a close with “Downside of Growing Up,” a track that tempers the sass and swagger of “Girl in a Country Song” with something bittersweet and beautiful.