premise: Nuance was an American dance music/freestyle group. It was formed by the producer and arranger, Ron Dean Miller, and featured Vikki Love on vocals. They charted three hits on the US "Billboard" Hot Dance Music/Club Play chart in the 1980s, including "Loveride," which hit #1 in 1985. The same track peaked at #59 in the UK Singles Chart in January 1985.
hypothesis: Nuance was a musical duo.
reason: Only two musicians are mentioned.  We don't know if there is a third member of the group, so we don't know if it was a duo.