Simplify the following text for a Grade 11 native English-speaking person.
Original: Dr. Rajkumar ( Real Name : Singanalluru Puttaswamayya Muthuraju April 24 , 1929 â '' April 12,2006 ) was the most popular actor in Kannada 's film industry .
Simplified: Rajkumar , born as Singanalluru Puttaswamayya Muthuraju ( April 24 , 1928 - April 12 , 2006 ) was an actor and singer in the Kannada film industry .