sentences:  From 10 February - 14 March 2009, Helena Blackman played the lead role of Helen in Stephen Sondheim's "Saturday Night" at the Jermyn Street Theatre in London.On 14 February 2011, Blackman released her debut album, The Sound of Rodgers & Hammerstein, consisting of classic Rodgers and Hammerstein material, as well as some of their lesser known songs.From 5 to 31 December 2011, Blackman appeared in the title role of "Snow White" at the Redditch Palace Theatre.