Winehouse joined a campaign to stop a block of flats being built beside the George Tavern, a famous London East End music venue. Campaign supporters feared the residential development would end the spot's lucrative sideline as a film and photo location, on which it relies to survive. As part of a breast cancer awareness campaign, Winehouse appeared in a revealing photograph for the April 2008 issue of Easy Living magazine. Winehouse had an estimated PS10m fortune, tying her for tenth place in the 2008 The Sunday Times listing of the wealth of musicians under age 30. The following year her fortune had dropped to an estimated PS5m. Her finances are run by Mitch and Janis Winehouse. It was reported she earned about PS1m singing at two private parties during Paris Fashion Week. as well as another PS1m to perform at a Moscow Art Gallery for Russian oligarch Roman Abramovich. Winehouse loaned a vintage dress used in her video for "Tears Dry on Their Own" as well as a DVD to the British Music Experience, a new museum dedicated to the history of British pop music. The museum, located in The O2, opened on 9 March 2009.  In January 2009, Winehouse announced that she was launching her own record label. The first act on her Lioness Records is Winehouse's 13-year-old goddaughter, Dionne Bromfield. Her first album, featuring covers of classic soul records, was released on 12 October 2009. Winehouse is the backing singer on several tracks on the album and she performed backing vocals for Bromfield on the television programme Strictly Come Dancing on 10 October.  Winehouse and her family are the subject of a 2009 documentary shot by Daphne Barak titled Saving Amy. Winehouse entered into a joint venture in 2009 with EMI to launch a range of wrapping paper and gift cards containing song lyrics from her album Back to Black. On 8 January 2010, a television documentary, My Daughter Amy, aired on Channel 4. Saving Amy was released as a paperback book in January 2010.  Winehouse collaborated on a 17 piece fashion collection with the Fred Perry label. It was released for sale in October 2010. According to Fred Perry's marketing director "We had three major design meetings where she was closely involved in product style selection and the application of fabric, colour and styling details," and gave "crucial input on proportion, colour and fit." The collection consists of "vintage-inspired looks including Capri pants, a bowling dress, a trench coat, pencil skirts, a longline argyle sweater and a pink-and-black checkerboard-printed collared shirt." At the behest of her family, three forthcoming collections up to and including autumn/winter 2012 that she had designed prior to her death will be released.

Answer this question "When did the museum open to the public?" by extracting the answer from the text above.
The museum, located in The O2, opened on 9 March 2009.