Composer Bert Bacharach (left) and lyricist Hal David (right) pose with singer Dionne Warwick, their longtime collaborator, at the "Love, Sweet Love" musical tribute to Mr. David on his 90th birthday in Los Angeles in October 2011. (AP Photo/Vince Bucci)

Photo by: Vince Bucci

Composer Bert Bacharach (left) and lyricist Hal David (right) pose with singer Dionne Warwick, their longtime collaborator, at the "Love, Sweet Love" musical tribute to Mr. David on his 90th birthday in Los Angeles in October 2011. (AP Photo/Vince Bucci)