In 2007, Plant and Alison Krauss released 'Raising Sand', one of the most acclaimed albums of the 21st Century. It was an unlikely, mesmerizing pairing of one of rock's greatest frontmen with one of country music's finest and most honoured artists, to form one of the most effortless-sounding duos in modern popular music. Produced by the legendary T Bone Burnett, 'Raising Sand' entered the Billboard 200 at Number Two and was certified platinum. It won six Grammy awards, including both Album and Record of the Year.