Mark Ronson will celebrate his 40th birthday in September and the music producer has said he's not worried about reaching the milestone.

Speaking with Marie Claire magazine in Australia the star said when asked if he worries about having a mid-life crisis, "No, no. I mean, I've just bought a convertible Porsche ... I feel OK about it.

"After 35, everything sounds old in music anyways, so it's fine."

The Uptown Funk hitmaker added that his main ambition is to make timeless music, "To leave a legacy of great records and good music. I don't want anything much grander than that...

"I try to make music that you could imagine hearing in 20 years. There is no specific ingredient, but I have no problem saying I'm really influenced by and love soul music. Stuff like Motown probably filters into the things I do. But you want to make a record that sounds timeless."