What song is playing in the new Sam's Club commercial?

Goes a bit like:

"God only knows what I'd be without you, God only knows what I'd be without you..."

The commercial features different scenarios of people painfully smiling (i.e. an older [I presume wealthy] women showing off a hot dog cooker, a sorority girl with a giant sign pointing to her, a couple with a giant Santa globe next to them, etc.)

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Thanks.

What song is playing in the new Sam's Club commercial?

God only knows, by the Beach Boys