Simplify the following text for a Grade 9 native English-speaking person.
Original: Coldplay are an English alternative rock band formed in 1996 by lead vocalist Chris Martin and lead guitarist Jonny Buckland at University College London .
Simplified: Coldplay , are an English alternative rock band , formed in London in 1996-1997 . Chris Martin , who became the lead singer and frontman of the band , and Jonny Buckland , who became lead guitarist , were looking forward to form a band while at University College London .