I dont know abt Subhaniyogamale.
Kannannukku Enna Vendum has Natabhairavi touches, but then not exactly, if we write the notes for it. 1-2 notes from Natabhairavi are replaced thereby resulting in something that cannot be slotted in a particular raaga.
Violin Vicky tried to analyze this in IR yahoogroup and he wrote the following, which i am pasting here without his permission:
"There is no shades of Ni3 (Periya Ni) in this song whatsoever. So Keeravani is ruled out.The song in my view is set in Nata Bhairavi (Normal Minor scale..); (And hence your resemblance to Keeravani is explainable as its same as Natabhairavi except Ni)This can be confirmed by the violin + Flute combo phrase towards the end of first interlude that descends from Melsthai Ga to Normal Sa and
rises back to Melsthaai Pa(So one marathon run of swaras in one cycle of Aadhi that goes as: "ga ri sa | ni dha pa | ma ga ri | sa ri ga ma
| pa dha ni sa | ri ga ma pa.. ||")Also towards the end of "Mukthai Swara" type of phrase that occurs at the end of 2nd stanza , you can
observe the wavy phrase of plain swaras sung by both the singers: "sa ri ga ma pa dha ni sari sa ni dha pa ma ga riga ma pa dha ni sa ri ga saa.."Thus the Sampoorna nature of the raaga is established beyond doubt..but I would like to highlight some very very interesting facts in this song:-
The pallavi of this song is quite intriguingly set by using only the notes Sa Ri Ga Pa Dha Sa (i.e., same as Mohanam's swaras except ga and dha are substituted by natabhairavi' s ga and dha; In other words same as using Chinna Dha in Siva Ranjani); I don't know what is the name of this raaga.. Pretty surprising.. because with such strong swaras its really strange that there are not many (or actually none) compositions in this sa ri ga pa dha sa combination; (Note: in the phrase "Ullam ennum malaro.." in pallavi,
you have an application of 'Ma'. This is the only exception.. Else Pallavi is based on this novel Sa Ri ga pa dha sa.)So Vel, CSR, Sai
Kumar and other Raaga exponents, any idea of what this raaga is..? We might be sitting on another Raaja treasure trove here. - Even though its Natabhairvai, the importance for Ri and Dha is way above the Raaga lakshanam. At times makes you feel its Dharbari kaanada; A similar feel could be observed in the song "Maniye Mani Kuyile".