Paris Hilton is training her ass off ... working with some of the BIGGEST DJs on Earth ... in a brand new quest to become the most POWERFUL female house musician of all time ... TMZ has learned.

Sources close to P tell TMZ ... Hilton has been traveling the world to shadow some super-famous DJs to get some guidance for her upcoming house music album.

We're told Hilton has become pretty tight with HUGE names like Afrojack and Deadmau5 -- and even plans to appear on stage with Deadmau5 in the near future.

One source extremely close to the heiress tells us, Hilton's been told by the best in the biz she could become the "Queen of house music" -- because "no woman has ever taken over in that arena ... and she wants to become that person."