A month after the release of her debut album, Rihanna began working on her second studio album. "A Girl like Me" was released in April 2006. "Rolling Stone" felt that "the burning rock guitar" and haunted strings of some of the album's tracks made ""A Girl like Me" [...] likable." The album was a commercial success, charting in the top 10 in 13 countries. The album reached No. 1 in Canada and No. 5 in the United Kingdom and the United States, where it sold 115,000 copies in its first week. The album became Rihanna's first to be certified Platinum by the RIAA, after selling over 1,000,000 units. Its lead single, "SOS", was an international success, charting in the top five in 11 countries. The song reached No. 1 on the US "Billboard" Hot 100 and in Australia, her first to reach this chart position. "Unfaithful", the album's second single, reached the top 10 in 18 countries, including No. 1 in Canada and Switzerland. Two more singles were released from the album: "We Ride" and "Break It Off".