Instruct: Classify a review as either positive or negative.
Query: Great concert but what happened to Burton's voice?

This is great concert footage of the band. Unfortunately you see mostly Burton Cummings and Randy Bachman and not much of the other band members. Too bad, Gary Peterson is a solid drummer.But what happened to Burton Cummings voice? It sounds like a cartoon character of his former soulful self. The songs are still good and his piano playing is great, harmonica too, but the vocals are just not what they used to be. Too bad.Overall it's a great concert movie. I never saw Randy Bachman live before. He's outstanding.I'd recommend this video to anyone but caution them that the vocals are not what you remembered The Guess Who to be.