Tori's piano bench

Tori just said in an interview, that in concert she has to have her piano and vocal monitors at a certain level so she can hear herself, but she has to turn down the drum and bass because it will blow her ears out. So for the bass player to feel the rhythm of the band they put the monitor in the carpet and it vibrates so he can stand on a carpet and feel the drum beat, and they do the same for the drummer, but because Tori has her pedals etc-- she had the engineers rig her vibrating rhythm thing in her piano seat.