The short clip shows the 'All of me singer' playing the notes of O’ Christmas Tree over and over again as his wife hummed to the song while cradling their baby.

"The never-ending song," Chrissy captioned it.

Ever since they welcomed their first child in April, both Chrissy and John have been flooding their social media pages with adorable photos and shots of Luna.

But, we are so in love with this!