There’s something special happening on the Las Vegas Strip. In fact, it’s taking place even as you read this article. For more than 120 hours now the continuous sound of music has poured through the doors of Rí Rá Irish Pub, as the venue attempts to break the current Guinness World Record for the longest concert by multiple artists.

The feat kicked off on Oct. 1, and in order to beat the record of 360 hours—held by AJ’s Music Café in Michigan—the bands must keep the music going for more than 16 days straight. (At most a 25-second break between songs and a five-minute break between sets is allowed.)

“We are definitely going to go a good bit past the 360 hours in order to break the record, and then we plan to play for as long as we can after that, so I have no real idea when we will stop,” said Dave Browne, an Irish musician and host of the record-breaking attempt.

More than a dozen bands and musicians are taking part in Rí Rá’s attempt, with some performers flying in from Ireland to help out. Among those artists is Liam Reilly of the Irish rock band Bagatelle and Derek Warfield, who founded the Wolfe Tones. Browne will also perform with his band, The Black Donnellys. While Irish music will be a big focus, guests will be treated to bluegrass, pop, country, folk—and Elvis might even pop by.

Rí Rá’s doors will remain open around the clock, inviting guests to stop in at any time to enjoy a pour of Guinness and food specials and to cheer on the bands.

“This is really going to be something special, so come to Rí Rá get involved and witness some amazing talent and musicianship,” Browne said. “We want this to be a huge success, and we are asking for everyone’s support to help us break this record.”

The Shoppes at Mandalay Place, 24 hours daily through end of record attempt; regular hours resume Oct. 17: 9 a.m.-3 a.m. Sun., 8 a.m.-3 a.m. Mon.-Sat. 702.632.7771