Jack Michael Antonoff (born March 31, 1984) is an American singer, songwriter, multi-instrumentalist, and record producer. He is the lead vocalist of the rock band Bleachers, and previously the guitarist and drummer for the pop rock band Fun and the lead vocalist of the indie rock band Steel Train. Antonoff has produced and co-written songs with other music acts such as Taylor Swift, Lorde, Lana Del Rey, St.
