Adele released[发布] her second album 21 in 2011. The album's sound is described as contemporary[现代] rock and country music. She has said that this is because her bus driver would play contemporary Nashville music while touring in the American South. She told Spin Magazine "He listened to all this amazing country music and we'd rock out late at night, chain smoking and listening to Rascal Flatts. It was really exciting for me because I never grew up around [that music]."
The album hit No. 1 in Ireland, Germany, Holland, New Zealand, Switzerland, Austria, and Belgium. To promote[宣传] her album Adele performed[表演] in Europe and North America on her Adele Live tour. As of April 2011, she has sold the most albums of all artists in 2011 in the US, with sales totaling over 1,070,000.