Question: Who sang i've been thinking about you?
Disambiguated questions and answers: question: Who sang i've been thinking about you, released in 1990?
Who sang i've been thinking about you, released in 1991?
What band sang i've been thinking about you, covered in 2016?
What singer sang i've been thinking about you, covered in 2016?
Who sang i've been thinking about you, covered in 2017?
answer: Londonbeat
Camille Filfiley
Camille
Goodluck
Juliet Harding
Bounty Island
Natural Questions answer: Londonbeat (from the Wikipedia article "I've Been Thinking About You")