There are at least five artists with the name Sunday. (1) A Korean singer from the group 천상지희 The Grace. Use 선데이 as your artist tag. (2) An American R&B girl group in 2001 released their first single "I Know" which peak at #98 on the billboard Hot 100. They first appeared on a hidden bonus track on Whitney Houston's Album "My Love Is Your Love" called "Believe In Love". Their self-titled debut album was to be released on Capitol Records but never hit the shelves.