Mepụta ụdị nke ahịrịokwu a nke dị mgbagwoju anya Ọ bụ Tom Bradshaw chepụtara okwu a na mbido afọ 1970 n'akwụkwọ akụkọ Guitar Player.
N'ezie, nsụgharị dị mgbagwoju anya nke ahịrịokwu ahụ bụ "Okwu ahụ bụ Tom Bradshaw dere na mmalite afọ 1970 n'akwụkwọ akụkọ na magazin Guitar Player, ọ bụ mkpirisi maka'' ChOrd PEDal arrangemENT '. "