In March 2011, Spears released her seventh studio album Femme Fatale. Max Martin and Dr. Luke executive produced the album and the album's first single "Hold It Against Me". The single debuted at number-one on the Billboard Hot 100. This gave Spears her fourth number-one single on the chart, and made her only the second artist in history to have two consecutive singles debut at number-one, after Mariah Carey. The album peaked at number one in the United States, Canada, and Australia and peaked inside the top ten on nearly every other chart. The album's peak in the United States ties Britney for the third-most number ones among women with Mariah Carey and Janet Jackson. In April 2011, Spears appeared in a remix to the song "S&M" by Rihanna after Rihanna asked her fans via Twitter who they wanted her to collaborate with. The song reached number one in the US in mid-April 2011, giving Britney her fifth number one on the chart. In early May, Spears' second single from "Femme Fatale", "Till The World Ends", reached eighty-seven million audience impressions on the Billboard chart, granting Spears the highest weekly audience of her 12-and-a-half-year chart career.