The reason was simple. Many valuable things, tapes, photographs, letters and books which were a treasure, were lost once for all when my wife passed away. I lost all interest even in things precious and hardly bothered about preserving expensive items or even memorable events. KVN's musical cassette was a victim of this disappointing disappearance. For sure, the aerial waves and sonic vibrations never die and the songs he sang and the ragas with which he regaled must still be somewhere.
Nothing vanishes forever.
I am beholden to KVN and Nada Brahman. Narayanaswamy belongs to Kerala by birth although he was a sishya of Ramanuja Iyengar, the immortal musical legend. Nevertheless, Kerala has its own individuality in musical culture, articulatory purity and pronunciational authenticity which vidwans with Malayalam - Sanskritic linguistic clarity possess. No pejorative reflection on Tamil greats, please. Apart from this, I must emphasise that KVN has enriched Carnatic music by his own originality.