Simplify the following text for a Grade 3 native English-speaking person.
Original: In April 2007 , Gammer started his own label , Muffin Music , and released a promotional mix for it . In 2008 , 2009 and now 2010 , Gammer was named Hardcore DJ of the year , a major honor won previously by Darren Styles .
Simplified: Matt Lee is known as Gammer ( or DJ Gammer ) .