In case you forgot, here's his mind-blowing audition which now has over 60 MILLION views on YouTube!
Still gives us chills! Anyway, Jack is now 20 and we only just stumbled across his Instagram... BOY IS GROWN UP. And he's a ~total~ babe too btw...
And we're defs getting some JB vibes with these pics...
Last year, Jack revealed that he had quit the music industry and was working at a local aged-care facility caring for dementia patients.
He told New Idea at the time that he "wanted to be a normal teen" without the stresses that fame brings. Fair enough boo. "The first couple of years, I got pretty big-headed and full of myself for a while," he explained.
But it looks like he might be ready for a comeback! According to Daily Mail, he hinted to fans that "he'll be back" with a cryptic post on Facebook! Jack hasn't officially released new music since his 2012 single 'Finding You' so we can't wait to see what he has up his sleeve!
