Very sad news. The most unmistakeable voice in Irish music is no more. Not only distinctive, but a hugely original individual by all accounts.
Here's a link to a YouTube of him from the 1960s doing 'The Old Alarm Clock'
Here he is doing Dominic Behan's rebel song (in the real sense of the term), McAlpine's Fusiliers.
And here's Patrick Kavanagh's Raglan Road: