Harold Melvin & the Blue Notes' Philly Soul sounds sent ripples for miles. The group's heartfelt drama is reflected in the string-laden sway of the British soul combo Simply Red (“Holding Back the Years”), while their smooth harmonies and emotional vocals live on in R&B balladeers Boyz II Men (“4 Seasons of Loneliness”) and in the impassioned voice of New York neo-soul songwriter Alicia Keys (“If I Ain't Got You”).