Source: Barbara Davidson / Getty D'Angelo, the four-time Grammy Award-winning R&B singer who helped define and elevate the '90s neo-soul movement, has reportedly passed away at the age of 51. Known for his velvet vocals, genre-blending sound, and deeply spiritual artistry, D'Angelo was more than a musician; he was a cultural force. Often mentioned in the same breath as '90s neo-soul heavyweights like Erykah Badu, Jill Scott, and the late Angie Stone, D'Angelo didn't just contribute to the genre-he helped invent it.