One concert I recall hearing about while living back in Ireland was their support gig to Sonic Youth at the 'Top Hat' venue in Dublin on 21 August 1991. I recall this gig as I was more a fan of Sonic Youth at the time, and it was a concert I really wanted to be at, but I just couldn't get a ticket. This concert at the Top Hat was held just one month before Kurt Cobain's band Nirvana released their biggest album called Nevermind and it was the first time Irish fans got to hear their biggest ever hit Smells Like Teen Spirit. That moment must have been really special I reckon.
Here's an advert for that concert which I kept from a magazine at the time. (looks like the magazine printed the wrong date!)
Nirvana played support to Sonic Youth at a gig the previous night in Sir Henry's Pub, Cork before heading to Dublin.
Here's an audio clip of their song 'About a Girl' from that gig.