Frank Sinatra Jr. has died, he was 72.

He died unexpectedly of cardiac arrest while on tour in Daytona Beach, Florida.

Frank Sinatra Jr., who took over his father’s legacy by following in his footsteps died Wednesday. He was 72.

Even though they called him Frank Sinatra Jr, his real name was Francis Wayne Sinatra — his father’s full name was Francis Albert Sinatra — but he went professionally by Frank Sinatra Jr.