Her earliest US appearances were in Boston with the Handel and Haydn Society of Boston in 2006[4] and with Cal Performances in San Francisco.[5] She made her debut at Santa Fe Opera in July 2008.[6] Recently Watts sang Mozart Requiem with the Boston Handel & Haydn Society and Harry Christophers which will be released on CD.
Watts’ other recordings include discs of Schubert Lieder and Bach Arias, both of which were chosen as Gramophone Magazine Editor's Choice. She has also released recordings of Thomas Arne's Artaxerxes, Handel's Messiah with the Huddersfield Choral Society and Brahms Requiem with the London Philharmonic Orchestra.
In January 2011, Watts was appointed as an Artist in Residence at London's Southbank Centre for the 2011-12 season.[7]