LOS ANGELES (AP) — Cissy Houston, a two-time Grammy-winning singer who performed alongside superstar musicians like Elvis Presley and Aretha Franklin and the mother of Whitney Houston, has died. She was 91. Her daughter-in-law Pat Houston tells The Associated Press that Houston died Monday morning in her New Jersey home while under hospice care for Alzheimer’s disease. The acclaimed gospel singer was surrounded by family members. Houston was in the well-known vocal group, the Sweet Inspirations, with Doris Troy and her niece Dee Dee Warwick. Houston won Grammys for her albums “Face to Face” in 1997 and “He Leadeth Me” the following year in the best traditional soul gospel album category.