Simplify the following text for a Grade 9 native English-speaking person.
Original: Karl Michael Ziehrer ( also spelled as Carl Michael Ziehrer ) ( May 2 , 1843 - November 14 , 1922 ) was an Austrian composer of light music such as waltzes and polkas .
Simplified: Karl Michael Ziehrer ( also spelled as Carl Michael Ziehrer ) ( May 2 , 1843 - November 14 , 1922 ) was an Austrian composer .