Learning the (Hindustani flute) involves mastering the system—the Indian equivalent of Solfège—where seven basic notes are derived from the sounds of nature. The 7 Basic Notes (Shuddha Swaras)
A good lesson PDF doesn't just give you songs; it gives you the Aaroh (ascending scale) and Avroh (descending scale) of a Raga. Hindustani Flute Notes Pdf