But it's not the first time Britain's Got Talent bosses, who have insisted an "editing procedure" was the reason the capo on the youngster's guitar appeared to jump mid-song during his appearance on Saturday night, have had to speak out in defence of an act.
The show has given viewers access to some of the most talented acts in the UK but has also attracted its fair share of fix claims.
Who can forget Paddy and Nico?
Just last year, salsa-dancing granny Paddy, 79, and 39-year-old partner Nico Espinosa wowed the judges but not all of the public as they had to fend off fix claims because it emerged they had won a Spanish TV talent show in 2009.
Rex 
Fredenham 'fakery'
Series seven saw singing sensation Alice Fredenham at the centre of a fakery storm as she was hit by a crippling bout of nerves before her performance but managed to recover to put in a tear-jerking effort.But what really seemed to annoy people was when she appeared on The Voice a week later and there was no sign of her anxiety.
ITV/Wenn 
Not Fabia for a family audience
Back in 2009's third series when Susan Boyle was just another BGT contestant, one auditionee was trying her breast, sorry best, to impress - Fabia Cerra.The dancer whipped off her top to reveal her breasts covered with nipple tassels - but her best efforts didn't go down well with all the mums and dads watching and ITV received 40 complaints.
Shows us your next (Bea)trix
Series six also featured another contestant who was all too keen to show off her assets as burlesque performer Beatrix Von Bourbon stripped down to nipple tassels before the watershed. Ofcom launched an investigation but ITV didn't get in any trouble.
ITV 
Ronan to win?
Like Henry, another 12-year-old singer who was praised for his sublime performance was Ronan Parke in 2011's series five. But his act was hit by controversy when a blog, claiming to have been penned by a Syco executive, claimed he was already known by Syco.The police even got involved and Syco releaed a statement saying they hadn't set eyes on him until he auditioned for the series. He finished runner-up.
Kid acts
In 2013, then-Strictly Come Dancing co-host Sir Bruce Forsyth hit out at the show for allowing children to audition, suggesting bosses should create a new show for youngsters called British Children Have Talent.He said: "I don't think that's entertainment. I don't think they should put children on that are too young."
ITV 
However…
As well as Henry, this series has seen Marc Metral and his singing dog Wendy attract fakery claims.But despite all this, we cannot deny Henry has some serious talent for a 12 year old and who doesn't want to see a singing dog on their screens of a Saturday night?
*Britain's Got Talent returns next Saturday on ITV*