Adele released her second studio album in 2015.
21 is the second studio album by British singer Adele . It was released on 24 January 2011 in most of Europe , and on 22 February 2011 in North America . Adele . She released her second studio album , 21 , in early 2011 . The success of 21 earned Adele numerous mentions in the Guinness Book of World Records .