Dublin school kids faced off their counterparts in Mayo in a video clash that rivals the All Ireland final.
The children attending St Colmcille's CS composed lyrics for The Dubs are Back in Town to the old Thin Lizzy tune.
Meanwhile those in St Brendan's Belmullet, Mayo did an operatic version of 'Time to Say Mayo' - to the music of 'Time to Say Goodbye'.
The entire school then became involved in videoing, editing and composing a music video to go with the songs.
Principal John McKennedy of St Colmcille's CS said that it was a collaboration between the two schools.
"One our teachers here - Chantelle Barrett - was a past pupil there in Mayo," he told the Herald.
"It became a transition year project. Unfortunately for us - Mayo had a week’s start on us."
"In the game against Kerry with one minute to go, it looked like we (Dublin) weren't going to in it. Mayo knew they were going to be in it for some time."
Mr McKennedy said that they encouraged their students to do something creative ahead of the GAA final.
"It was very much a student led project," he explained.
"We as teachers helped them out. And the digital media unit in transition year was instrumental in this."
The school in Knocklyon with 720 pupils has deep Dublin GAA roots.
"This is Ballyboden St Endas heartland - we are very much a GAA school," he said. "Ironically our strongest end is hurling but we have Gaelic football teams out as well.
“One of our past pupils - Niall McMorrow is on the Dublin panel."
Both schools are hoping to get the video shown at Croke Park at half time at the match on Sunday.