In 1997, McLachlan released her most successful album to date, "Surfacing". It topped the chart in Canada and reached number two in the United States, and also charted in various countries around the world. "Surfacing" was certified diamond in Canada for selling over one million copies, 8× platinum in the US for selling eight million copies, and gold in other countries. "Surfacing" featured the hit singles: "Building a Mystery", "Sweet Surrender", "Adia" and "Angel". All singles charted inside top ten in Canada, including number one for "Building a Mystery". All singles charted on the "Billboard" Hot 100, and two of them became McLachlan's first top ten hits on that chart: "Adia" at number three and "Angel" at number four. At the 40th Annual Grammy Awards, "Building a Mystery" won a Grammy Award for Best Female Pop Vocal Performance and "Last Dance" from "Surfacing" won a Grammy Award for Best Pop Instrumental Performance. "Surfacing" was also nominated for the Grammy Award for Best Pop Album. At the 41st Annual Grammy Awards, "Adia" was nominated for Best Female Pop Vocal Performance.