Wii music

There are drums, from what I just saw in a trailer type thing on youtube. But it brings about the question of how would you do the bass drum? I've played drums for years and it doesn't seem possible to actually be able to play a full kit on the Wii.
mabye the bass drum would be a button although that would be kind of hard to get used to for experienced drummers.

it would be cool if they could just make like two petal things that could be used on a bunch of different games. for example in a raceing game the brake, gas, and klutch, or in music it could be an effect petal for a guitar or like u said bass drum and high hat. that would be cool.