The songs were recorded at the band's KCLSU gig in London on January 29th, earlier in the year.
Record Store Day is a celebration of independent record stores and the way they contribute to music, with this day seeing them secure hundreds of exclusive items from record labels which are only available through participating stores. More than 150 UK indie record stores took part in last year's event and over 180 are signed up for this year.
If you aren't able to track a CD or vinyl copy down, the recording is also available for streaming on Spotify.
Note that just because a store is on the participation list, they won't necessarily have copies of all the limited releases from all artists - best to check with your local store directly.