“If "Fighting" produced one very positive thing in the studio, it introduced that unique twin guitar sound that would be part and parcel of Thin Lizzy. It emerged from nowhere towards the end of the recording, up until that point Gorham and Robertson would simply share solos between them: "It was a complete accident," Gorham said later. "Brian Robertson was playing a single note line. Somebody flipped the delay button on. It was something like a quarter-second delay, and the note followed him accidentally in harmony. Everybody was amazed at the effect. We decided to try it for real and put it on whatever decent lines it made sense with.”