Saptak

Saptak is the collective name for the 7 notes. Saptak is in to 3 types,namely:
1. Mandra sapthak
2. Madya sapthak

3. Tara sapthak or Uchcha sapthak

Thus saptak of mandra saptak are twice lower than the Madya sapthak and the sounds of the tara saptak is twice higher than the madya saptak.The notes of the mandra saptak are shown by placing dot above them as follows:

1. Mandra saptak
SA , RI ,GA ,MA ,PA ,DA ,NI
. . . . . . .

2. Madya saptak
SA ,RI ,GA ,MA ,PA ,DA ,NI

3. Tara saptak
. . . . . . .
SA ,RI ,GA ,MA ,PA ,DA ,NI

THATA

A collection of notes that can produce ragas is called a Thata or Mela. There are ten (10) hats is north indian music . They are given below: /
1. Kalyan - S ,R ,G , M ,P,D , N
-

2. Bilawal - S ,R ,G ,M ,P ,D ,N


3. Khamaj - S, R ,G ,M ,P ,D ,N
-

4. Kafi - S ,R ,G ,M ,P ,D ,N
- -
5. Bhairava - S ,R ,G ,M ,P ,D ,N
- -
6. Bhairavi - S ,R ,G ,M ,P ,D ,N
- - - -
7. Ashavari - S ,R ,G ,M ,P ,D ,N
- -
/
8. Purvi - S ,R ,G ,M ,P ,D ,N
- -
/
9. Marva - S ,R ,G ,M ,P ,D ,N
-
/
10. Todi - S ,R ,G ,M ,P ,D ,N
- - -

A that should have the following facts :
(1). A that mut have all the seven notes.
(2). It should be in the ascending order.
EX: The two forms of each notes
(3). The two forms of each swara .
EX:Komal and Teevra form can come one after the other in that.
(4). A that need not please he listner. It need not be sweet like a raga.
(5). A that is named after the chief ashraya raga produced by it.
EX: Bhairav that is named after it's chief raga Bhairava.