What's going on with the Irish supergroup Celtic Woman?

The girls were doing a signing at Borders in the Time Warner Center in New York on Wednesday and my spies tell me they were giving away coupons for 50 percent off their gigs this weekend at Radio City Music Hall.

That's a huge discount and indicates that ticket sales may be off.

The girls are playing at Radio City Friday, February 26 and Saturday, February 27, 2010 as part of a 75-city American tour billed as a celebration of Ireland.

However, if they're handing out 50 percent off coupons for Radio City, they cold be in trouble.

Maybe their concert tour is going the same way as Ireland. Broke!