'Wilson said that he “knew Pet Sounds would be a real special album - the voices made me feel that.” “The voices” – the frequent auditory hallucinations about which he has long spoken openly – are symptomatic of the bipolar and schizoaffective disorders from which he has suffered since 1965. Although his mental health has improved in recent years, he still hears “the voices”...'
http://thequietus.com/articles/20279-interview-brian-wilsonI thought he meant "The voices" to be the voices of those who were singing the songs - the Beach Boys?
So did I, at that point. I think everyone does, until they read on. Still, the reviewer could easily have taken the other path. It would have made perfect sense and the review would have been more upbeat as a result.