Looking on the internet deeply has found these results:

singing at the top of his Voice is the most popular phrase on the web.

singing at the top of his lungs 128,500 results on the web	singing at the top of his Voice 162,400 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
And tommy would just sing at the top of his lungs day and night. He was taking his trash to the alley and singing at the top of his lungs. He was jumping up and down, flailing his arms, screaming at the top of his lungs. He'd sing "Yellow Submarine" at the top of his lungs to make you laugh and save the mango in his fruit salad for you. When that nativity display pops up at the top of the high street. I believe they're at the top of the evolutionary ladder. And finally your dad yelled at the top of his lungs, Honestly, Bob, he hardly ever screams at me at the top of his lungs like that.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

singing at the top of his lungs

128,500 results on the web

singing at the top of his Voice

162,400 results on the web

More popular!

And tommy would just sing at the top of his lungs day and night.
He was taking his trash to the alley and singing at the top of his lungs.
He was jumping up and down, flailing his arms, screaming at the top of his lungs.
He'd sing "Yellow Submarine" at the top of his lungs to make you laugh and save the mango in his fruit salad for you.
When that nativity display pops up at the top of the high street.
I believe they're at the top of the evolutionary ladder.
And finally your dad yelled at the top of his lungs,
Honestly, Bob, he hardly ever screams at me at the top of his lungs like that.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.