Dattatreya Sadguru Deva
Oh God and Noble teacher Dattatreya, grant us to serve Your Feet. You are Brahma the eternal God, Vishnu, Narayana who is indweller in all. You are Shiva, Mahadeva adorned with the serpent.
Typically for the pitch, Nishad (7th) is used instead of Pancham (5th) or Madhyam (4th).