It's Pi Day, when nerds like to celebrate the mathematical constant that represents the ratio of a circle's circumference to its diameter. It equals 3.14159 so they recognize it on 3-14, but when we hear pi, we think of the delicious baked good. 

To mark Pi Day in our way, we've added pie to some classic album covers.

Kiss - Kiss, 1974

The DoorsThe Doors, 1967

The BeatlesAbbey Road, 1969

Led ZeppelinHouses of the Holy, 1973

Bruce Springsteen, Born in the U.S.A., 1984

NirvanaNevermind, 1991

Pink Floyd, Dark Side of the Moon, 1973

However you choose to celebrate Pi Day, enjoy it!