The Sound of Music is a musical with music by Richard Rodgers, lyrics by Oscar Hammerstein II and a book by Howard Lindsay and Russel Crouse. It is based on the memoir of Maria von Trapp, The Story of the Trapp Family Singers. Set in Austria on the eve of the Anschluss in 1938, the musical tells the story of Maria, who takes a job as governess to a large family while she decides whether to become a nun. She falls in love with the children, and eventually their widowed father, Captain von Trapp.

An Andrew Lloyd Webber production opened on November 15, 2006, at the London Palladium and ran until February 2009, produced by Live Nation's David Ian and Jeremy Sams. Following failed negotiations with Hollywood star Scarlett Johansson, the role of Maria was cast through a UK talent search reality TV show called How Do You Solve a Problem like Maria? The talent show was produced by (and starred) Andrew Lloyd Webber and featured presenter/comedian Graham Norton and a judging panel of David Ian, John Barrowman and Zoe Tyler.  Connie Fisher was selected by public voting as the winner of the show. In early 2007, Fisher suffered from a heavy cold that prevented her from performing for two weeks. To prevent further disruptions, an alternate Maria, Aoife Mulholland, a fellow contestant on How Do You Solve a Problem like Maria?, played Maria on Monday evenings and Wednesday matinee performances. Simon Shepherd was originally cast as Captain von Trapp, but after two preview performances he was withdrawn from the production, and Alexander Hanson moved into the role in time for the official opening date along with Lesley Garrett as the Mother Abbess. After Garrett left, Margaret Preece took the role. The cast also featured Lauren Ward as the Baroness, Ian Gelder as Max, Sophie Bould as Liesl, and Neil McDermott as Rolf. Other notable replacements have included Simon Burke and Simon MacCorkindale as the Captain and newcomer Amy Lennox as Liesl. Summer Strallen replaced Fisher in February 2008,  with Mulholland portraying Maria on Monday evenings and Wednesday matinees.  The revival received enthusiastic reviews, especially for Fisher, Preece, Bould and Garrett. A cast recording of the London Palladium cast was released. The production closed on February 21, 2009, after a run of over two years and was followed by a UK national tour, described below.

Answer the following question by taking a quote from the article: when was it revived?
November 15, 2006,