American singer, Frank Sinatra Jr, who carried on his father's legacy with his own career in music, has died at the age of 72.
He suffered a heart attack on Wednesday in Daytona Beach, Florida where he was due to play at a concert.
He followed his father in the music business as a teenager, and later became his father's musical director and conductor.
Frank Sinatra Jr released six full-length albums and often made television appearances, recently starring as himself in two episodes of Family Guy.
Frank Senior died of a heart attack in 1998.