An off-kilter electropop/dance-pop track built on a rubbery bass line, finger-snaps, and deadpan, half-spoken vocals, “bad guy” became Billie Eilish’s global breakthrough. The single topped the U.S. Billboard Hot 100 (ending the 19-week run of “Old Town Road”) and hit No.1 in multiple countries, while its minimalist production and playful “duh” hook turned into a pop-culture meme. At the 2020 Grammys it won both Record of the Year and Song of the Year.