Mr. Blake derived a simple melody by playing a few dozen digits of pi using a C-major scale, with 3, 1, 4, 1, 5, 9 translated to the notes E, C, F, C, G, D and so on.
The C and E Series (as well as the G Series for embedded applications like digital signage, set-top boxes, and game consoles and the Z Series, a 6 watt version aimed at passively cooled, sealed applications like tablets) are based on the same 75 square millimeter Brazos die.