Published Saturday, 17 August 2013
The Good Will Hunting star was the headliner at a benefit at the Yamashiro Farmers Market, held to raise funds for beloved local children's entertainer Ellen 'Twinkles' Meyers, who suffered a severe stroke last year.
But it was Driver's son Henry who stole the show - the four-year-old drew loud cheers after joining his mum for a rendition of The Killers' single Human.
In video footage of their performance, Driver can be seen holding the microphone up for little Henry, who pulls it away and continues to sing solo even after the track finishes.
The 43-year-old recently gushed about Henry's budding musical talents, cooing: "My son just started piano lessons and we play the guitar together. He is clearly loving music. I was on tour when I was pregnant with him, between my seventh and eighth month, and he had a guitar pressed up against his head every night for two hours, rocking out, so he didn't have any choice! It's literally in him."