Simplify the following text for a Grade 8 native English-speaking person.
Original: Knut was the subject of several popular songs in Germany , the most successful of which were the singles `` Knut is Cute '' and `` Knut , der kleine EisbÃ r '' by nine-year-old Kitty from KÃ penick .
Simplified: Knut has been the subject of several popular songs in Germany , such as the singles `` Knut is Cute '' and `` Knut , der kleine EisbÃ r '' by nine-year-old Kitty .