High Quality Content by WIKIPEDIA articles! The Brill Building (built 1931 as the Alan E. Lefcourt Building and designed by Victor Bark Jr.) is an office building located at 1619 Broadway on 49th Street in the New York City borough of Manhattan, just north of Times Square and further uptown from the historic musical Tin Pan Alley neighborhood. It is famous for housing music industry offices and studios where some of the most popular American music tunes were written. The building has been described as "the most important generator of popular songs in the Western world."