There are a couple of items worth pointing out. Endendoo Ninnanu marethu was sung by P.B, the soul of Rajkumar before Raj started singing on a regular basis, and that was from the movie "Eradu Kanasu". And then "Ee mounava thalenu" was from the movie "Mayura", which starred Manjula opposite Rajkumar and not Jayaprada. Nobody can forget "Baanigondu Elle ellide", the ever green song from "Premada Kaanike". Another brilliant song "Maanavanaaguveya illa daanavanaguveya" from the movie "Bahaddur Gandu" would typically qualify for an Oscar or a Grammy, if it ever surfaced in the western world.
A small correction song "Ee mounava taalenu" was from the movie MAYURA & his costar was Manjula.
One more gr8 song which must be added in Dr.Raj's best songs is "Maanikya veena" from movie "Kaviratna Kaalidaasa" ....superb sanskrit song.... Even Crickter Anil Kumble mentions this song as Raj's best
But 100 % this is not end of the list there are more and more songs which are even popular ...u can include all songs from Kavirathna Kalidasa.., Navaaduva Nudiye Kannada Nudi from gandada Gudi2..etc, etc.. so many, almost 80 % of rajkumar's songs are very good songs, supported by very good lyrics and music. What makes special is Rajkumar's voice itself, its very attrcative that evry kanndiga will remember for ever.