"B-sides." The "flip side" of popular songs, back when single hit songs were sold on 45-RPM records over at every other store back in the 20th century. These B-side songs are not obscure... in fact, in a lot of cases, the B-side song of these singles became more popular than the A-side, when the record companies didn't even intend for the B-side to become a hit.
Also featuring Matt Connarton and Dj Steve Light.