American pop rock band Fun Was formed by this Former lead singer of the The Format who also started performing as a solo musician in this year?
Fun (band):  The band was formed by Nate Ruess (former lead singer of The Format), with Andrew Dost (of Anathallo), and Jack Antonoff (of Steel Train and Bleachers). Nate Ruess:  As of 2015, he also performs as a solo musician.
2015