My mom took me to see "Sweeney Todd" on Broadway with Angela Lansbury when I was 9. It scared and amazed me. Definitely my favorite musical/tragedy/gorefest of all time. Apparently, maybe to tie in with the Tim Burton movie version, there was Japanese version staged in Tokyo last year. I missed it, but after catching this rehearsal video on YouTube, I don't think I missed much. Something a bit weird about this story being performed by an all Japanese cast in Japanese. Doesn't do much for Sondheim's music or lyrics.
On a similar note, this Korean actress seems to get the voice sounding right on another "Sweeney Todd" song.