You can’t talk emo culture without certain bands immediately rolling off the tongue: Jawbreaker, Sunny Day Real Estate, Death Cab for Cutie, Alkaline Trio, Rites of Spring—and, of course, Dashboard Confessional, whose lead singer, Chris Carrabba, became the unofficial poster boy for the genre, characterized by emotional, hardcore punk and “confessional” lyrics. When Carrabba sang “I’m reading your note over again / There’s not a word that I comprehend /Except when you signed it / ‘I will love you always and forever,’ ” a generation of music fans felt his guitar-driven angst.