SPORT: In motorracing what colour flag denotes Danger no overtaking?

Questions

Music : What entertainer is allowing one of his songs to be used in a government campaign to beat drunk driving?

Music : What famous classical composer continued to compose great music after becoming deaf?

Music : What famous singer was known to give automobiles to complete strangers?

Music : What group refused to have their pictures taken while they were not in their makeup?

Music : What group's biggest-ever hit was Be My Baby?