This was mentioned in the first programme of the new series of Garddio a Mwy, so in case it’s of interest to anyone… @CatrinLliarJones !
http://www.geirfagarddio.cymru/wp/
also on twitter - https://twitter.com/geirfagarddio?lang=en
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Ah diolch Siaron!
I’m definitely going to get organised and set something up! 
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They’ve popped up in Awr y dysgwyr on twitter too.