Simplify the following text for a Grade 7 native English-speaking person.
Original: Promoted by Village Sounds and Secret Service , the festival began in 2001 as a one-day event and soon evolved into a two-day event in the following 2002 festival .
Simplified: The festival started in 2001 as a one-day event and soon grew into a two-day event in the following 2002 festival .