Johnna Lee Cummings (born 1971) is an American pop music singer known for her lead vocals with the early 90s girl group Boy Krazy; under the direction of Stock Aitken Waterman, Boy Krazy became a one-hit wonder on American Top 40 music charts with their hit song "That's What Love Can Do" which was released in 1991, but became a bigger hit after it was remixed and re-released two years later.