Editing Jack Antonoff (section)

===fun. and Commercial Breakthrough (2008–2015)===

In 2008 Antonoff joined '''fun.''', a New York indie pop group founded by vocalist [[Nate Ruess]] and also featuring Andrew Dost. The band's second album ''Aim and Ignite'' (2009) attracted critical attention, but it was their third album ''Some Nights'' (2012), produced by [[Jeff Bhasker]], that became a mainstream phenomenon. The singles ''We Are Young'' (featuring [[Janelle Monáe]]) and ''Some Nights'' both reached the top five of the Billboard Hot 100, with ''We Are Young'' hitting number one and becoming one of the defining pop anthems of the year. The album won the Grammy Award for Best New Artist in 2013.

The success of fun. gave Antonoff his first major industry platform and introduced him to the broader world of mainstream pop production. During this period he began developing the production relationships that would come to define the next phase of his career, most critically his early collaborations with [[Taylor Swift]] on her ''Red'' era and the beginning of his partnership with [[Lorde]].

fun. effectively went on indefinite hiatus after ''Some Nights'', with each member pursuing separate projects, though no formal breakup has been announced.