Your claim is that videos of live concerts, videos of live testimonies from musicians, and the Bible cannot be used as proof that some musicians sell their soles to Satan. Correct? If so, what do you consider 'proof' that this is occurring? To my knowledge, short of actually getting a face-to-face admission from the musicians in question, video is the next best thing. Many of the sources used in the Hells Bells video can be researched and found on your own, such as back-issues of Rolling Stones magazine.