The son of the Late Frank Sinatra has passed away. Frank Sinatra Jr was touring at the time, when he suffered cardiac arrest in Daytona Beach Florida. During his career, Sinatra Jr worked for his father as his musical director and conductor. Sinatra Jr also acted on several tv shows in the 70’s and 80’s. He is survived by his two sisters, Nancy and Tina, and a son. He was 72.