Carrie Underwood posts cute baby photo: 'Oh, just playing my piano in my blazer'

/ Source: TODAY

Carrie Underwood just gave a whole new meaning to the term "baby grand."

In an Instagram photo she posted Tuesday, the "American Idol" alum's baby son Isaiah is pictured playing (or perhaps ... plunking) a tiny piano in their backyard.

"Oh, just playing my piano in my blazer in the yard…" wrote the country singer about her 6-month-old child in the caption of the photo.

Underwood and NHL player Mike Fisher welcomed Isaiah together in February, and in July, the family made headlines when their child and dogs became accidentally locked inside Underwood's car. Luckily, fast thinking by family members and Underwood herself led to a swift rescue (her brother-in-law ended up breaking the car window to get Isaiah and the pups out safely), but it was certainly still a scary moment.

MORE: Carrie Underwood shares cute pic of son Isaiah 'checking out the world' from bus

"Storyteller," the star's fifth album, is out on October 23.