Complex sentence: Ethan "Chooka" James Parker is a contestant on the 2011 season of Australia's Got Talent, who has earned instant fame from his audition where he showcased his unique freestyle piano playing talent.
Split into simpler sentences: Ethan "Chooka" James Parker is a contestant on the 2011 season of Australia's Got Talent. Chooka earned instant fame in Australia following his audition for the television talent contest after he showcased his unique freestyle piano playing talent.