11.   A chorus of white-coated engineers sings backup.

12.   Neal Matthews Jr., who sang backup to Elvis Presley, Patsy Cline and many others as part of the singing quartet The Jordanaires, has died.

13.   She sang backup for Lynne, a superlative singer whose career began in a blaze of publicity but has yet to fulfill its promise.

14.   Sting and Ziggy Marley sing backup.