Simplify the following text for a Grade 7 native English-speaking person.
Original: Kelechukwu `` Kele '' Rowland Okereke ( born 13 October 1981 ) is a British musician , best known as the lead singer and rhythm guitarist of the alternative rock band Bloc Party .
Simplified: Kelechukwu Rowland Okereke known as Kele Okereke is a British singer and guitarist for rock band Bloc Party . He was born in Liverpool on 13 October 1981 and grew up in London , England , United Kingdom .