Press photo by Dana Grubb Directed by vocal department chair David Macbeth, the Lehigh Valley Charter High School for the Arts Touring Choir is fast becoming a go-to group for backing vocals when shows are booked into the Sands Bethlehem Event Center. On Feb. 20 they backed longtime rock group Foreigner during the encore Foreigner anthem, 'I Want to Know What Love Is,' and have already backed the band PARAMORE in 2013 and the multi-media show Video Games Live last fall. Limited to 25 singers from the 34