Making Thaats with Tetrachords Part II

Making The First 16 Thaats with 8 Tetrachords:

In the last post we saw that there are 4 poorvang Tetrachords and 4 Utrang Tetrachords.

By combining the upper and the lower Tetrachords, we can get 16 (4×4) unique scales.

The scale structure will be as shown below:

Tetrachord Number
Poorvang
Utrang
Thaat Names
Vikrat
1. Bilaval
1
+
1
none
2. Sarsangi
1
+
2
‘d’
3. Khamaj
1
+
3
‘n’
4. Charukeshi
1
+
4
‘d’, ‘n’
5. Suryakant
2
+
1
‘r’
6. Bhairav
2
+
2
‘r’,’d’
7. Chakarvak
2
+
3
‘r’,’n’
8. Bakulabharan
2
+
4
‘r’, ‘d’, ‘n’
9. Gauri Manohari
3
+
1
‘g’
10. Kirvani
3
+
2
‘g’,’d’
11. Kafi
3
+
3
‘g’,’n’
12. Asavari
3
+
4
‘g’, ‘d’, ‘n’
13. Kokilpirya
4
+
1
‘r’, ‘g’
14. Dhenuka
4
+
2
‘r’, ‘g’,’d’
15. Natakpirya
4
+
3
‘r’, ‘g’, ‘n’
16. Bhairavi
4
+
4
‘r’, ‘g’, ‘d’, ‘n’

The scales will look as shown below:

1. Bilaval:

Bilaval is the combination of Bilaval Tetrachords from the both sides (1+1).

Bilaval
Bilaval
1. S R G m
+1. P D N S*

2. Sarsangi:

Sarsangi is the combination of Bilaval & Sarsangi Tetrachords (1+2).

bilaval
sarsangi
1. S R G m
+2. P d N S*

3. Khamaj:

Khamaj is the combination of Bilaval & Khamaj Tetrachords (1+3).

bilaval
khamaj
1. S R G m
+3. P D n S*

4. Charukeshi:

Charukeshi is the combination of Bilaval & Charukeshi Tetrachords (1+4).

bilaval
charukeshi
1. S R G m
+4. P d n S*

5. Suryakant:

Sutyakant is the combination of Surykant & Bilaval Tetrachords (2+1). Suryakant is also known as Anand Bhairav.

suryakant
Bilaval
2. S r G m
+1. P D N S*

6. Bhairav:

Bhairav is the combination of Surykant & Sarsangi Tetrachords (2+2).

suryakant
sarsangi
2. S r G m
+2. P d N S*

7. Chakarvak:

Chakarvak is the combination of Surykant & Khamaj Tetrachords (2+3). Chakarvak is also known as Ahir Bhairav.

suryakant
khamaj
2. S r G m
+3. P D n S*

8. Bakulabharan:

Bakulabharan is the combination of Surykant & Charukeshi Tetrachords (2+4).

suryakant
charukeshi
2. S r G m
+4. P d n S*

9. Gauri Manohari:

Gauri Manohari is the combination of Gauri Manohari & Bilaval Tetrachords (3+1).

Gauri Manohari
Bilaval
3. S R g m
+1. P D N S*

10. Kirvani:

Kirvani is the combination of Gauri Manohari & Sarsangi Tetrachords (3+2).

Gauri Manohari
sarsangi
3. S R g m
+2. P d N S*

11. Kafi:

Kafi is the combination of Gauri Manohari & Khamaj Tetrachords (3+3).

Gauri Manohari
khamaj
3. S R g m
+3. P D n S*

12. Asavari:

Asavari is the combination of Gauri Manohari & Charukeshi Tetrachords (3+4).

Gauri Manohari
3. S R g m
+4. P d n S*

13. Kokilpirya:

Kokilpirya is the combination of Kokilpirya & Bilaval Tetrachords (4+1).

kokilpirya
Bilaval
4. S r g m
+1. P D N S*

14. Dhenuka:

Dhenuka is the combination of Kokilpirya & Sarsangi Tetrachords (4+2). Dhenuka is also known as Pilu.

kokilpirya
sarsangi
4. S r g m
+2. P d N S*

15. Natakpirya:

Natakpirya is the combination of Kokilpirya & Khamaj Tetrachords (4+3).

kokilpirya
khamaj
4. S r g m
+3. P D n S*

16. Bhairavi:

Bhairavi is the combination of Kokilpirya & Charukeshi Tetrachords (4+4).

kokilpirya
charukeshi
4. S r g m
+4. P d n S*

Please note that all these Thaats have ‘Komal Madhyam’. Which is also know as Natural Fourth or Shudh Madhyam.
Making the rest of the 16 Thaats is easy now. Just change the Madhyam to Tivar in all the above. We will talk about those in the next post.

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