-- Elton John calls being a father to his two young sons the "greatest thing" in his life.
The singer added, "They are the greatest thing in our lives. There’s no words to describe how much we love these boys. They’re just amazing."
The boys sometimes sing their famous father's songs, such as "Rocketman," "Don't Go Breaking My Heart" and "Benny and the Jets," but John admitted they have a few favorites of their own.
"I mean they love ‘Hotline Bling,'" he told DeGeneres. "That’s their favorite song. And they love ‘Uptown Funk’ and Zachary likes ‘Kraftwerk’ which is a bit worrying."
They may love the music, but they're not necessarily ready to follow in their dad's footsteps.
"They're not that keen on what I do," said John, who just released his 33rd album. "They are kind of more interested in their Legos, which is fine with me."