wrote some of pop music's most enduring songs, including “Chapel of Love,” “Be My Baby” and “Leader of the Pack,” died Wednesday, according to her niece. She was 68. Greenwich died of a heart attack at St. Luke's Roosevelt Hospital, where she had been admitted a few days earlier for treatment of pneumonia, according to her niece, Jessica Weiner. Greenwich, a member of the Songwriters Hall of Fame, was considered one of pop's most successful songwriters. She had a rich musical partnership with the legendary Phil Spector, whose “wall of sound” technique changed rock music. With Spector, she wrote some of pop's most memorable songs, including “Da Doo Ron Ron” and “River Deep, Mountain High.” But Spector wasn't her only collaborator. She also had key hits with her ex-husband Jeff Barry, including the dynamic song “Leader of the Pack” (years later, Broadway would stage a Tony-nominated musical with the same name based on her life). Greenwich also worked as an arranger and singer, a role that saw her working with artists including Frank Sinatra and Ella Fitzgerald. Among the more famous songs she wrote are “Baby I Love You,” “Do Wah Diddy Diddy” and “Look of Love.” Greenwich is survived by a sister, brother-in
