This instrument is an improved version on the FM kbrd.
It was designed to be portable, long lasting and to provide more options sound-wise with 6 in-built outuputs, one for each radio. Newer features include — volume control, AM/FM band switch and tunning.
Consists of 6 radios, 6 keys, 6 tunning dials, 6 volume controls, 6 AM/FM switches, 6 LED lights, 6 antennas, 6 mono audio outputs and 1 power socket.
More photos of the keyboard can be found here, and a filmed live performance here.
Some pics of the building process: