Only two years out of Wesleyan where they met, Hana Elion ’15 and JJ Mitchell ’15, the duo who are Overcoats, have enjoyed several markers of success this spring. While both Elion and Mitchell describe the formation of the band as something that “just sort of happened,” Elion adds that a career in music seemed like “a faraway dream that I didn’t expect to happen in reality.” But it is. Their debut album, Young, released on April 21, 2017, is what they consider work-in-progress since their graduation, The title, they say, reflects the album's emotional content: the confusion and wonder of the recent college…