12 Notes of Saptak, सप्तक के 12 स्वर

12 Notes of Saptak, सप्तक के 12 स्वर

As you have learnt C D E...  In India it is Sa Re Ga Ma.... All these notes are derived from the voice of some animals and birds: Comparision of CDEF to SaReGaMa:

C = Sa= सा   Full name Shadaj   षडज  It is derived from voice of Peacock  मोर
D = Re= रे    Full name Rishabh रिषभ  It is derived from  voice of Papiha पपीहा
E = Ga= ग   Full name Gandhar  गन्धार It is derived from  voice of Goat बकरा
F = Ma= म   Full name Madhyam मध्यम  It is derived from voice of Crane (बगुला )
G = Pa= प    Full name Pancham पंचम  It is derived from  voice of Koccoo ( Koyal कोयल )
A = Dha= ध   Full name Dhaiwat  धैवत It is derived from  voice of Frog दादुर या मेंढक
B = Ni= नि    ( नि =नी)   Full name Nishad   निषाद  It is derived from  voice of Elephant हाथी
C = Sa= सां (Higher Sa)

C# or Db = Re = रे 
D# or Eb = Ga = ग
F# = Ma*= मे
G# or Ab = Dha= ध
A#  or Bb = Ni = नि
All notes underlined are called Komal Swar as Komal Re Komal Ga Komal Dha Komal Ni.  One note Ma* is called Tivra Ma
Sequence of the notes are
C  C#  D  D# E  F  F# G  G#  A   A# B  C'
Sa  Re    Re Ga   Ga Ma Ma' Pa  Dha Dha Ni    Ni  Sa'
सा रे     रे  ग    ग  म  मे   प  ध   ध    नि   नि सां
Sa and Pa are Shudha Swar they do not have any Komal or Tivra. They are fixed notes as per North Indian music tradition.
Yes what I am telling is as per North Indian music system
Play Twinkle Twinkle in Sa Re Ga Ma as I play.