The National Eisteddfod has prohibited a bilingual rapper from performing because his songs contain too much English.
Sage Todz announced on social media that the festival's Welsh language policy prevented him from appearing there.
His cover of Dafydd Iwan's Yma o Hyd made headlines last year, and he has since discussed why Welsh is significant to him.
The National Eisteddfod described the Welsh language restriction as "fundamental" to the event.
The festival is held this year in Boduan, Gwynedd, the county where Sage Todz, a Penygroes native, was born.
"Songs are finished products, not subject to change," the artist wrote on Twitter.
I'm not protesting; I'm just letting people know why I won't be there, he responded when someone said the performer should "abide by the rules.". ".
Nia Morais, the 2023 Children's Poet of Wales, contested the National Eisteddfod's stance.
I don't think we have the right to restrict that if that's how he expresses himself, she said.
Joe Healy, the Welsh learner of the year for 2022, expressed disappointment that the audience wouldn't get to see him.
However, he added, "you can't expect the National Eisteddfod to modify its language policy for anyone.".
The National Eisteddfod's regulations state that, unless otherwise noted, all compositions and competing must be in Welsh. ".
The rapper was allegedly given several opportunities to perform, including a contract to write brand-new Welsh songs.
Our language policy was extensively discussed with Sage Todz, and we respect the fact that he is a bilingual artist, according to a spokesman.
He made the choice to uphold his beliefs and carry on writing music in both English and both languages. " .
Super Furry Animals' debut album, Fuzzy Logic, was released in 1996, and soon after, they were scheduled to perform at the National Eisteddfod in Llandeilo.
While whistling their songs from the stage, the band printed the English lyrics and distributed them to the crowd.