Original: Rajkumar ( ) , ( born Singanalluru Puttaswamayya Muthuraju , April 24 , 1929 - April 12 , 2006 ) was an actor and singer in Kannada film industry .
Simplified: Dr. Rajkumar ( Real Name : Singanalluru Puttaswamayya Muthuraju April 24 , 1929 -- April 12,2006 ) was the most popular actor in Kannada 's film industry .