Arguably Willensky's most well-known work is "Got to Be There," which was Michael Jackson's first solo hit and reached number 4 on the R&B singles chart in 1971.[4] The song reached number 5 on the R&B chart again in 1983 when it was covered by Chaka Khan. The song has also been covered by The Miracles in 1972, Boyz II Men in 2007, and an instrumental version by jazz guitarist/singer George Benson in 1993.
Willensky continued his affiliation with the Jackson family into the 1980s, writing the noted Jermaine Jackson and Whitney Houston duet, "If You Say My Eyes Are Beautiful," which appeared on Jermaine's 1986 Precious Moments album.
In 2021, a play entitled Elliot and Me, conceptualized by Elliot Willensky and his younger brother Steven Willensky, and finished after Elliot's death by Steven Willensky and Scott Coulter, debuted at the Hudson Theater Works in Weehawken, New Jersey.[6][7]