Iron Maiden frontman Bruce Dickinson has said that he wants the band to replace him if he finds that he can’t sing anymore.In a new interview, Dickinson also said that he would want a say in choosing his replacement.He told the Daily Star‘s Wired column:”If tomorrow I don’t feel able to sing more than four songs a night, I’d like the guys to continue and I should be able to choose my replacement. I would stick my head in from time to time and the other singer would do the rest.”“When you look at Keith Richards, who suffers from arthritis, he’s not on top form every night but he’s supported by other guitarists.