Beady Eye have recorded a version of Blur's 'Country House' – the song that once charted ahead of Gallagher's old band Oasis in their infamous 1995 chart battle.
That year Oasis' 'Roll With It' went in at Number Two behind 'Country House' amidst a war of words between the two bands.
3,000 copies of the new single have been pressed. Half will be available in record stores in Gallagher's hometown of Manchester and the other half in stores in New Cross, London, where Blur formed.
Gallagher said: "The chart battle was only a bit of a fucking laugh and secretly 'Country House' was always my favourite Blur song. Especially the bit in the video when Alex James rides the pig."
Scroll down and click below to watch the video in question.
The Beady Eye mouthpiece added: "I'm saying all this bad blood between us should be put in the past and everyone should come together to help out Record Store Day for the good of music."
The limited-edition singles, already being tipped as the collectors' items of 2011 by music auction experts, will cost £50 each. Proceeds will be split between Beady Eye and Albarn.