Heh... as a pianist, I'm used to unusual hand positions. I use my left hand, put the thumb on the right-hand [Alt], left index on the right-hand [Ctrl], and then left flipper, ring, or pinky, depending on where [Del] is located. I'm amused that people think you have to use two hands.
On my laptop, [Ctrl] and [Alt] are next to each other, so it's right thumb on both of those, and right index for the Del key.