The Brill Building is an office building located at 1619 Broadway, New York City. It became a central hub for music publishers, songwriters, and producers in the 1950s and 1960s, housing numerous music industry offices and studios. It's renowned for the "Brill Building Sound," a style of pop music, and for its prolific songwriters who penned many hit songs for artists of the era, significantly shaping American popular music.