Complex sentence: He first went to Keyboard lessons at the age of 5 years old having dropped the Recorder he attended Keyboard lessons expanding his musical knowledge for a further 5 years before graduating from the Kedgley School of Music at teh age of 10.
Split into simpler sentences: He first went to Keyboard lessons at the age of 5 years old having dropped the Recorder. He attended Keyboard lessons expanding his musical knowledge for a further 5 years before graduating from the Kedgley School of Music at the age of 10.