Complex sentence: The jazz band was restarted in about 2002 and it also gives many performances each year in 2007 the Band Instructor added a Jr. Jazz band for Freshman learning to play other instruments and preparing them to join the Jazz Band.
Split into simpler sentences: The jazz band was restarted in about 2002 and it also gives many performances each year. In 2007 the Band Instructor added a Jr. Jazz band for Freshman learning to play other instruments and preparing them to join the Jazz Band.