What role in the creation of music is filled by both Frank Sinatra and Ed Robertson?
Ed Robertson: Lloyd Edward Elwyn "Ed" Robertson (born October 25, 1970) is a Canadian musician, best known as the lead singer, guitarist, and songwriter of the band Barenaked Ladies. Frank Sinatra: Francis Albert Sinatra ( ; ] ; December 12, 1915 – May 14, 1998) was an American singer, actor, and producer who was one of the most popular and influential musical artists of the 20th century.
singer