Blackledge, who amused the crowd with his 'La Bamba' cover, told Digital Spy that he plans to include "more comedy" in his routine.
"I've listened to what they've said and I thought of doing more comedy with a carrier-bag," he revealed.
Judge David Walliams was particularly impressed by the 42-year-old, branding him a "very funny man" and encouraging him to include more stand-up material.
However, the Preston entertainer insisted that he would not be "losing the organ", adding: "That's my identifying feature. I've got some ideas, I've got some ideas. I'm working on them, but it's all buts and maybes at the moment."
Blackledge will discover his fate this Saturday, as Britain's Got Talent airs from 8.45pm on ITV1.
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Watch Graham Blackledge's Britain's Got Talent audition below: