Dattila is cited as an authority on recognizing murchanas through counting omitted svaras
"Similarly has said
Dattila -
"When the tana is made in this manner (by omission of the prescribed
svaras), the knowledgeable one should ascertain, by counting the perishable
(omitted) (svara), that this murchana is this-manieth.""
<sup>1</sup>
<sup>77</sup>
TRANSLATION
(Anu. <sup>51</sup>)
But if the indication of murchanas is done with the middle heptad, then why
has it been said to be (done) with madhyama svara? Truly has this been said.
The use of singular number is in relation with the jāti (species) of svara. The
purport is that the 'murchana' should be made in the kanthya svara (the tonal
range of the voice). The inclusion of the adjective vaina 46 (pertaining to viņā)
(for svara) is in order to encompass the sthana (register or range) that could
not be described in the body (human voice).
(Anu. <sup>52</sup>)
But when the (process of) sādavita and auduvita is being undertaken, then
does the recognition of the (original) murchana exist or does it not exist? The
recognition of the (original) mūrchanā is certainly there. Similarly has said
Dattila -
"When the tana is made in this manner (by omission of the prescribed
svaras), the knowledgeable one should ascertain, by counting the perishable
(omitted) (svara), that this murchana is this-manieth."
[ Dattilam <sup>37</sup> ]
(Anu. <sup>53</sup>)
But when şadja is omitted in the first and seventh mūrchanā, both take an
identical form viz. ri-ga-ma-pa-dha-ni, there the distinction (between the two) is
not evident. True, there is no difference. If the components are counted, there
surely is a difference; the difference is created by mandra and tara.47
(Anu. <sup>54</sup>)
This distinction of murchana and tana has been spoken of merely for the
sake of the convenience of the performer and the listener.48 The objective of
tāna has also been said to be for the sake of the attainment of the three
registers.
(Anu. <sup>55</sup>)
But mūrchanās are useful in jātis and rāgas, hence their treatment is justified,
where are the tanas to be used? It is being answered. The tanas are useful for
the sake of bringing out the difference between jatis and ragas of both the
grāmas (i.e. between those of one grāma and the other).49 Or, the use of tānas is
for the sake of the demonstration of the number of nașța (lit. lost) and uddișța
(lit. enumerated) (varieties of tānas).<sup>50</sup>