Simplify the following text for a Grade 5 native English-speaking person.
Original: Paul Bruce Dickinson ( born 7 August 1958 ) is an English singer , airline pilot , fencer , broadcaster , author , director , musician , screenwriter , actor , marketing director , entrepreneur and songwriter best known as the vocalist of the heavy metal group Iron Maiden .
Simplified: Bruce Dickinson ( born 7 August 1958 ) is an English heavy metal singer . He is the singer in the band Iron Maiden .