Simplify the following text for a Grade 13 native English-speaking person.
Original: Harding then went to the University of Cambridge , but after his first year at university , he was invited by Claudio Abbado to be his assistant with the Berlin Philharmonic Orchestra .
Simplified: Harding then attended the University of Cambridge , but after his first year at university , Abbado named him his assistant with the Berlin Philharmonic Orchestra .