An electric recording of the Welsh anthem found on a tape from the 70s was not performed by Jimi Hendrix.
The hoax generated interest from around the world
The owner of the tape, Martin Davies, admitted he had propagated the myth for fun.
Mr Davies admitted he persuaded a friend who formed a 70s punk band to play a Hendrix style version of the anthem.
"I could be accused of hoaxing but it was only a bit of fun. A lot of people had a lot of fun with it," he said.
Davies' friend John Ellis - who formed the Vibrators then went on to play with the Stranglers, Peter Gabriel and many others - performed Land of My Fathers.
The supposed Hendrix track was played on BBC's Newsnight in January.
Mr Davies said he put the version on his website with a story about its discovery expecting a few hundred hits.
But 35 million curious Hendrix fans around the world took up the story.
Mr Davies, a former record producer who now runs the Red Dragonhood design company, initially said he inherited the tape from a fellow producer Dave Chapman after his death in 2005.
He claimed the recording was made by a band whose bassist, Viv Williams, from Crickhowell in Powys, was friendly with Hendrix.
Some claimed the whole episode was a hoax and that the real guitarist would turn out to be the late Tich Gwilym who have been known to play distorted versions of Land of my Fathers.
Hendrix played a total of three gigs in Wales, and all in Cardiff: two in the Capitol in April 1967; and one in the November of that year at the city's Sophia Gardens.