Rihanna established her pop credentials in 2005 with "Pon de Replay," a boisterous debut single that narrowly missed the top of the Billboard Hot 100 and fast-tracked her to becoming one of the most popular, acclaimed, and dynamic artists in postmillennial contemporary music. Mixing and matching pop, dancehall, R&B, EDM, and adult contemporary material, Rihanna has been a near-constant presence in the upper reaches of the pop chart. Through 2017, she headlined 11 number one hits, some of which -- "Umbrella" and "Only Girl (In the World)" among them -- led to Grammy Awards. Mor...