That might work for singing it, but poor Tony would have the task of relearning that solo in a new key 😳 Not that he hasn't done it before on In The Cage for example, but that could be a heavier lift.
I don't think he has to relearn it in a new key. He can play in the original key and use a setting on his keyboard to transpose the key down. I think that's what he did on the 2007 tour - he looks like he is playing in the original key even though the song has been lowered.