FILE PHOTO: Jazz singer Nancy Wilson (L) and Oscar Peterson Quartet pianist Monty Alexander perform at the "Oscar Peterson - Simply the Best" memorial concert at Roy Thompson Hall in Toronto January 12, 2008. REUTERS/Mark Blinch/File Photo (Reuters) - Grammy award-winning singer Nancy Wilson, whose hits ranged from R&B to jazz and funk, died at her California home at age 81 on Thursday after a long illness, her publicist said.