0d.3 Fingering, and the half-hole
Written from the tradition, August 2026. The number of holes, the South Indian fingering for sa and the way flute length sets the pitch were checked against flute references, August 2026. Where makers differ the lesson says so.
What this is and why it exists
On a South Indian flute, sa is made by closing the top two holes. On a North Indian bansuri it is the top three.
That difference matters more than it sounds. A fingering chart from the wrong tradition puts every note in the wrong place, and a beginner has no way to notice. Check which instrument a chart is for before you use it.
The vocabulary
- Sa fingering — closing the top two holes, on this instrument.
- Sealing — covering a hole completely, so no air escapes at the edge.
- Half-hole — covering a hole partly, to reach a pitch between two notes.
- Leak — air escaping past a finger that is not sealing.
- Octave jump — the same fingering sounding an octave higher, from a faster air stream.
The mental model
The holes give you a fixed set of notes. The raga wants notes that are not always in that set. Half-covering a hole is how you reach the ones in between.
How far to cover is different on every instrument and cannot be written down. Your ear settles it against the drone, and no chart will help.
The second thing to hold on to is that fingers and breath share the work. The same fingering gives two different octaves depending on the air. So a note that will not speak is often a breath problem, and a note that is flat is usually a leaking finger.
The work
- Start the drone at your flute's sa.
- Cover each hole with the pad of the finger, not the tip.
- Close the top two holes and sound sa. Check it against the drone.
- Lift one finger at a time and let each note sound.
- Listen to each note against the drone as it appears.
- Note which ones are close and which are not. Not all will be right.
- Go back down the same way, replacing one finger at a time.
- If a note is flat and thin, one finger is leaking. Lift them one by one to find it.
- Take one hole and cover it about halfway. Listen to the pitch fall.
- Move the finger a little either way and listen again.
- Now take a fingering you know and blow faster and narrower.
- Listen for the note jumping to the octave above.
What you should now be able to explain or do
Play sa and the notes above it on a South Indian flute. Find a leaking finger by ear. Reach a pitch between two holes by half-covering one. Reach the upper octave with the same fingering and a different air stream.
Check yourself
Which holes make sa on this instrument?
The top two. On a North Indian bansuri it is the top three, which is why a chart from the wrong tradition misleads you.
A note is flat and weak. What is the likely cause?
A finger that is not sealing its hole. Lift each one in turn to find the leak.
How far do you cover a hole for a half-hole note?
Far enough that the pitch is right, which differs on every instrument. Your ear against the drone decides it.
The same fingering gives two different notes. Why?
The upper octave comes from a faster, narrower air stream on the same fingering.
Go deeper
Back to Fingering, and the half-hole: work through the checklist