Cheers dark Elf-maid, yes I'd say pop singers do count, many of them sing quite well! I'm not sure Paul mccartload oops McCartney classes as a typical Irish tenor, tho he's certainly at the right pitch.(thanks to Gibb Sahib for informative post on types of tenor.) I'll stick with Feargal Sharkey for 'pop' Irish tenor.
Don F, agree entirely about nasal quality in singing. To be avoided by practitioners and listeners both! 2 days later, now:
An Irish man walked into a high street bank and asked Can you change me an eighteen pound note? Bank teller replied There's no such thing, go away. Irish fella tries every bank on high street with much the same response in all of them: Lloyd's, NatWest, HSBC, etc until he gets to the Allied Irish. Can you change me an eighteen pound note, so? And the teller replies Sure and will you be wanting two nines, or three sixes?
Can't recall if that was Jimmy Cricket or not. Sounds like one of his...