Simplify the following text for a Grade 6 native English-speaking person.
Original: Roger Harry Daltrey , CBE ( born 1 March 1944 ) , is an English singer-songwriter and actor , best known as the founder and lead singer of English rock band The Who .
Simplified: Roger Harry Daltrey CBE ( born 1 March 1944 ) is an English musician best known as the singer of English rock band The Who .