In an attempt to capture the tonal quality of an electric organ, Vox developed the V251 Guitar Organ. Vox engineer Dick Denney incorporated six organ tone circuits in the body cavity of a Vox solid-body electric guitar and wired through the frets. By touching the metal string to the fret, the circuit was completed, and the tone triggered. Coupled with a remote power supply to fulfil the required voltage, the instrument could be run through any amplification system.
Having always wanted to try a Vox Guitar Organ, David Gilmour acquired this example in England in 1978 and kept it for home and studio use.