It's always a good idea to have positive and negative controls. In both types of control, you know what the correct results of the experiment should be. If you don't get the correct answers, then you know something went wrong with your experiment.<br />. <br />.
Leigh Nash. Leigh Bingham Nash (/liË nÃ¦Ê/; born June 27, 1976) is an American singer and songwriter who is the lead vocalist for the pop band Sixpence None the Richer and is also a member of Fauxliage and Movement Nashville. Her debut solo album, Blue on Blue, was released on August 15, 2006 by One Son/ Nettwerk record labels.
The song features guest vocals by British singer Mary Pearce, who previously worked as a backup vocalist for Beverley Knight, Lionel Richie and Chaka Khan. Remixes by High Contrast, Fake Blood and Dave Spoon were also announced. It made its world debut on 12 June 2009 with Pete Tong on BBC Radio 1.