In 1994, his first significant success came in the form of the hit single "U Will Know". D'Angelo co-wrote and co-produced the song for the all-male R&B supergroup Black Men United, which featured R&B singers such as Brian McKnight, Usher, R. Kelly, Boyz II Men, Raphael Saadiq and Gerald Levert. D'Angelo composed the music for "U Will Know", while his brother, Luther Archer, wrote the lyrics. Originally featured on the soundtrack to the film "Jason's Lyric" (1994), the single peaked at number 5 on the Hot R&B/Hip-Hop Singles & Tracks and number 28 on the "Billboard" Hot 100. The music video for "U Will Know" featured D'Angelo as the group's choir director; he reprised the role for the live performance of the song at the Soul Train Music Awards. That same year, he wrote and produced the song "Overjoyed" for the Boys Choir of Harlem, which appeared on their studio album "The Sound of Hope" (1994). The success of "U Will Know" helped build the buzz surrounding D'Angelo, which was followed by a number of highly promoted performance showcases, and added to the buzz among music industry insiders.