Question: who sang the song tell me something good?
Evidence: "Tell Me Something Good" is a song by Rufus, written by Stevie Wonder and released in 1974. This was the first and only hit credited to Rufus, as once singer Chaka Khan's voice became the focus of the group, they changed their name to "Rufus featuring Chaka Khan" for their next album.
Answer: Rufus and Chaka Khan