sentence1: Carl Ravazza ( July 21 , 1910 - July 28 , 1968 ) , also professionally known as Carl Ravell , was an American violinist , singer and bandleader .
sentence2: Carl Ravell ( July 21 , 1910 - July 28 , 1968 ) , also known professionally as Carl Ravazza , was an American violinist , singer and bandleader .