Simplify the following text for a Grade 7 native English-speaking person.
Original: The band debuted in July 2000 with an album called die Lollipops and have released new CDs , videos , and audio books at the rate of about two per year .
Simplified: The band debuted in July 2000 with a self-titled album which contains what are today many of their most famous songs . Since then , they have released new CDs , videos , and audio books at the rate of about two per year .