What Is a Thaat? All 10 Thaats of Indian Classical Music Explained
A thaat is a parent scale of seven notes in Hindustani (North Indian) classical music from which ragas are derived. There are 10 thaats in the Bhatkhande system, each defined by which of the seven swaras — Sa, Re, Ga, Ma, Pa, Dha, Ni — are shuddha (natural), komal (flat), or teevra (sharp).
Think of a thaat as the "note palette" and a raga as the "painting." Every thaat has exactly 7 notes; hundreds of ragas are grouped under these 10 parent scales. You can play all 10 thaats free on Web Harmonium in your browser.
Thaat vs Raga: What's the Difference?
A thaat is only a scale — a fixed set of notes in ascending order, with no mood, no ornamentation, and no rules of movement. A raga is a complete melodic framework built from a thaat's notes, with its own aaroh-avaroh (ascent/descent), vadi-samvadi (dominant notes), characteristic phrases (pakad), and emotional personality. For example, Raag Yaman, Bhupali, and Shuddha Kalyan all come from Kalyan thaat but sound completely different.
The 10 Thaats Chart (With Notes)
In the chart below, capital letters are shuddha swaras, lowercase letters are komal (flat) swaras, and M♯ is teevra (sharp) Ma. Learn how these map to the black keys in our komal & teevra swar guide.
| # | Thaat | Notes (Sargam) | Altered Swaras | Western Equivalent |
|---|---|---|---|---|
| 1 | Bilawal | S R G M P D N | All shuddha | Major (Ionian) |
| 2 | Kalyan | S R G M♯ P D N | Teevra Ma | Lydian |
| 3 | Khamaj | S R G M P D n | Komal Ni | Mixolydian |
| 4 | Bhairav | S r G M P d N | Komal Re, Komal Dha | Double Harmonic |
| 5 | Poorvi | S r G M♯ P d N | Komal Re, Teevra Ma, Komal Dha | — |
| 6 | Marwa | S r G M♯ P D N | Komal Re, Teevra Ma | — |
| 7 | Kafi | S R g M P D n | Komal Ga, Komal Ni | Dorian |
| 8 | Asavari | S R g M P d n | Komal Ga, Dha, Ni | Natural Minor (Aeolian) |
| 9 | Bhairavi | S r g M P d n | Komal Re, Ga, Dha, Ni | Phrygian |
| 10 | Todi | S r g M♯ P d N | Komal Re, Ga, Teevra Ma, Komal Dha | — |
How to Play Each Thaat on Harmonium
Start every thaat from Sa (commonly the C key for beginners). Play the seven notes slowly up (aaroh) and down (avaroh), holding each note for one full beat while keeping steady air — on Web Harmonium simply hold the key. Follow this order of difficulty:
- Bilawal first — all white keys, the foundation of sargam practice.
- Kafi and Khamaj next — each changes only one or two notes, training your ear for komal swaras.
- Kalyan — introduces teevra Ma, the only sharp note in the system.
- Bhairav, Asavari, Bhairavi — deepen your control of komal notes.
- Poorvi, Marwa, Todi last — these combine komal Re with teevra Ma and are the trickiest to sing and play in tune.
Kafi Thaat Scale in Detail
Kafi thaat — Sa Re ga Ma Pa Dha ni (komal Ga and komal Ni) — is one of the most-loved scales in Indian music. It matches the Western Dorian mode and carries a sweet, slightly romantic mood. Thumri, hori, and many folk melodies live in Kafi. Popular ragas from this thaat include Kafi, Bhimpalasi, Bageshri, Pilu, and Dhani.
Famous Ragas From Each Thaat
| Thaat | Well-Known Ragas |
|---|---|
| Bilawal | Alhaiya Bilawal, Deshkar, Durga |
| Kalyan | Yaman, Bhupali, Shuddha Kalyan |
| Khamaj | Khamaj, Desh, Tilak Kamod, Jaijaiwanti |
| Bhairav | Bhairav, Ahir Bhairav, Nat Bhairav |
| Poorvi | Poorvi, Puriya Dhanashree, Shree |
| Marwa | Marwa, Puriya, Sohini |
| Kafi | Kafi, Bhimpalasi, Bageshri, Pilu |
| Asavari | Asavari, Darbari Kanada, Jaunpuri |
| Bhairavi | Bhairavi, Malkauns (traditionally) |
| Todi | Miyan ki Todi, Gujari Todi, Multani |
Ready to go deeper? Our complete thaat & raga guide for harmonium covers aaroh-avaroh, vadi-samvadi, and practice exercises for each scale, and our 8 beginner ragas with notes gives you ready-to-play material.
Frequently Asked Questions
What is a thaat scale?
A thaat is a parent scale of seven notes (Sa Re Ga Ma Pa Dha Ni) in Hindustani classical music from which ragas are derived. Each thaat is defined by which notes are shuddha (natural), komal (flat), or teevra (sharp).
How many thaats are there in Indian classical music?
There are 10 thaats in the Bhatkhande classification system used in Hindustani (North Indian) classical music: Bilawal, Kalyan, Khamaj, Bhairav, Poorvi, Marwa, Kafi, Asavari, Bhairavi, and Todi.
What is the difference between a thaat and a raga?
A thaat is only a scale — a fixed set of seven notes with no mood or rules of movement. A raga is a complete melodic framework built from a thaat's notes, with its own aaroh-avaroh, vadi-samvadi, characteristic phrases, and emotional character.
What is the Kafi thaat scale?
Kafi thaat uses Sa, Re, komal Ga, Ma, Pa, Dha, komal Ni (S R g M P D n). It is equivalent to the Western Dorian mode. Famous ragas from Kafi thaat include Kafi, Bhimpalasi, Bageshri, and Pilu.
Which thaat is the same as the Western major scale?
Bilawal thaat — all seven notes shuddha — matches the Western major (Ionian) scale. On a harmonium starting from C, it is simply the white keys C D E F G A B. This is the first scale every beginner should learn.
Can I practice all 10 thaats without a harmonium?
Yes. You can practice every thaat for free on Web Harmonium, a virtual harmonium that runs in your browser. It labels every key, supports your computer keyboard or a MIDI keyboard, and needs no download.
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