ALT-J

Art-rock/electronica band formed by students at Leeds University in England.  Their debut album An Awesome Wave won the Mercury Prize for best British album in 2012.

Matilda / Fitzpleasure

2012, UK. Infectious Records (INFECT 132S)
1. Matilda
2. Fitzpleasure

It's an image of a rock in the sea.  The triangular nature of the disc is a reference to the band's alternative symbol, which is the Greek letter delta.