It's funny the things that happen to us. I suspect I had BP2 before my drinking problem set in. I went from beer to vodka and always made sure I had at least 2 full 1.75L of vodka under the bed, Lord only knows how much I actually drank.
Fortunately I never heard voices but I remember for over 2 weeks I could hear really good music and I would always reach down to the radio volume to crank up the tunes and it would freak me out to discover the radio was off.