Mela 20Veda chakraM1
Natabhairavi
The name is the number
Natabhairavi
Nana0tattha202 reversed20
The second syllable is traditionally read as retroflex ṭha = 2 (not ṭa = 1), which yields 20.
Every mela name encodes its own number — how the katapayadi sutra works.
SSR2R2G2G2M1M1PPD1D1N2N2SS (upper octave)
SS (upper octave)N2N2D1D1PPM1M1G2G2R2R2SS
How to know it
The natural-minor sound: brooding and tender, instantly familiar from countless film melodies; its rasa is Karuna.