Jack Antonoff is an American musician, songwriter, and record producer, best known as the lead guitarist of the band Bleachers and a member of Fun.. He has collaborated with various artists, including Taylor Swift, Lorde, and St. Vincent, contributing to their albums and helping shape their sound. Born on March 31, 1984, in Bergenfield, New Jersey, Antonoff began his music career in the early 2000s. He gained recognition for his work in the indie and pop music scenes, earning multiple awards, including Grammy Awards, for his contributions to the music industry.