US rockers the Foo Fighters wowed a rain-drenched crowd of 60,000 at Slane - and got a great reception for playing a Thin Lizzy cover.
Dave Grohl and his band launched into a rendition of Jailbreak, in a nod to the Phil Lynott-led band who headlined the first Slane concert in 1981.
Foo Fighters previously played the famous Co Meath venue in 2003 as the main support act for the Red Hot Chili Peppers.
And they lived up to their billing as a headline act on Saturday with fans rocking out to hits including Monkey Wrench, This Is A Call and Times Like These.
Cavan band The Strypes opened proceedings, before sets by Ash, Hozier and Leeds indie-rockers Kaiser Chiefs.
Ash played songs from their new album Kablammo! and finished with their full-throttle take on Undertones classic Teenage Kicks.
Co Wicklow man Hozier a huge success both in Ireland and America performed a set featuring hit single Take Me To Church and his version of the 2005 Amerie single 1 Thing.
This was the first Slane concert since the 2013 double-whammy of Bon Jovi and Eminem and the poncho-wearing concert-goers experienced what must have seemed like two years of rainfall in one night.
Foo Fighters guitarist Chris Shiflett posted a picture of him and the band backstage with commemorative bodhrans and joked, "We are ready to join The Dubliners!"
Hozier also tweeted to say he had an absolutely incredible time at Slane.
Huge thank you to Foo Fighters, it was such a joy to be there, he said.
After the gig, video footage of a female Garda officer making a public announcement about exiting the venue went viral.
She can be heard bursting into laughter after thousands of fans started repeating every line back to her.
A Garda spokesman said there were only a few minor arrests for public order offences on the night.
It generally passed off very peacefully. The rain dampened everything down, he said.
