​​Michael Bublé fought back tears recently while watching his 8-year-old son Noah play Bublé's song, "I'll Never Not Love You," on the piano.

The "Sway" singer shared the moment on Instagram with the caption, "More talent in his little fingers than I have in my whole body."

In the video, which shows Noah playing the opening notes of the song, Bublé begins fighting back tears before he starts singing along, overwhelmed with emotion.

The Grammy winner then lets Noah know how impressed he is, with verbal assurances and a pat on the back.

"Noah surprised me after I was away on tour," Bublé says in the video. "He worked so hard to learn this song. So proud of my guy. Dude, I'm getting choked up."

Bublé's famous friends, including "Dancing with the Stars" pro Derek Hough, "Good Morning America" co-host Michael Strahan and "Despacito" singer Luis Fonsi, all applauded Noah's talent in the comments of the post.

Noah, who turns 9 next month, is Bublé's eldest child, whom he shares with actress Luisana Lopilato. Noah was diagnosed with liver cancer in 2016, when he was just 3 years old. He is now in remission, but Bublé says he is still healing emotionally from that time in his life.

Bublé and Lopilato have two other children together, Elías Darío Demetrio and Vida Amber Beatriz. The couple revealed in February that they are expecting a fourth child this year, a baby girl.