BB Gadgets maestro Joel Johnson ruined my morning today by sending this clip of a recent Van Halen concert, featuring a "Jump" train wreck. Apparently, the pre-recorded synth parts were accidentally played back at a 48k bitrate instead of 44.1k. The result is a dissonant mess. From RW370:
Eddie tries to transpose on the fly and match the wildly fucked up keyboards but the great thing there is the difference in pitch is non-musical – about 1.5 semitones sharp. So there's no frets he can choose to fix the problem!