Playing the tunes for her tiniest soon-to-be fan!

Christina Aguilera has been hard at work on new music in the studio lately, and the singer decided to treat her unborn daughter to some melodies by placing a set of headphones on her growing baby bump!

"Baby girl getting first listen to what mama's been creating in the studio," she captioned the snapshot.

The blonde beauty and fianc Matthew Rutler are expecting their little princess this fall, but we bet the "Beautiful" songstress will want to regain her pre-pregnancy figure before walking down the aisle!