18:00Radio 1's Most PlayedCel's Birthday Number 1 Show!BBC Radio 1 Duration: 1 hour Sun 4th Sep 2016, 18:00 on BBC Radio 1 EnglandTo celebrate turning 21, Cel plays songs that have topped the chart on his birthdayGenresMusicPop & ChartEntertainmentBrandRadio 1's Most Played Source: BBC Online