In this 2007 photo provided by the BBC, Neurologist Oliver Sacks poses at a piano while holding a model of a brain at the Chemistry Auditorium, University College London in London. Noted neurologist Oliver Sacks has found common ground with the pastor of Harlem’s Abyssinian Baptist Church: Both men believe in the healing power of music. Sacks, the best-selling author of “Awakenings” and “The Man Who Mistook His Wife for a Hat,” was to share the church stage Saturday with the famed gospel choir as part of the inaugural World Science Festival, a five-day celebration of science taking place in New York this week. (AP Photo/BBC, Adam Scourfield) ** NO SALES **