rtp surya

I came to know that two cassettes of Sri. rtp mposlot303 T. rtp pramatic V Sankaranarayanan's concerts with Surya RTP were released by Gramaphone Company with no M47028 and M47029 I tried in almost all the stores in Chennai I could not get it Can anyone help me in getting me this Surya RTP of TVS sir If the equivalent CD if available, pl inform me