Related Information for Mercy 1) Metal band from Sweden. The death of its remaining member in 2005 ended the group, which generally passed unnoticed.2) American one-hit wonder pop group from Florida. They released an album in 1969 entitled Mercy - Love Can Make You Happy; this peaked at #38 on the U.S. Billboard Hot 200 chart as a result of the success of their hit single, "Love (Can Make You Happy)". The tune spent two weeks at #2 on the U.S. Billboard Hot 100 singles chart, and also peaked at #2 on the Adu.. read more