The dilruba is a bowed, fretted string instrument from North India, built for one purpose: to imitate the human voice. It very nearly manages it.
Its name is usually translated as something like heart-stealer, which is the kind of thing that sounds like marketing until you hear one.
What it actually is
Picture a long fretted neck, a wide flat body with a skin belly, and a bow. Then add the part that surprises people: underneath the playing strings run somewhere between fifteen and twenty-two sympathetic strings, threaded through small holes in the neck. Nobody touches them. They vibrate on their own when a note they are tuned to is played, and they are the reason a single bowed note arrives surrounded by a shimmer that no violin produces.
You play it sitting down, the body in your lap and the neck over your left shoulder, bowing with the right hand while the left slides along the strings.
The thing that makes it different
Frets, on a bowed instrument, sound like a contradiction. On a violin you stop the string against the fingerboard. Here the frets are tall and arched, and the string runs above them — so you do not press down onto a fret so much as slide along the string above them, letting the fret act as a reference rather than a stop.
That is the whole secret. It means you can move continuously between notes without ever losing the pitch, which is exactly what North Indian music requires and exactly what a fretted instrument normally prevents. The slide — the meend — is not an ornament added to the melody. It is the melody.
Combine that with a bow, which unlike a plucked string can sustain a note indefinitely, and you get something no other instrument quite does: a line that can hold, swell, bend and arrive, in one continuous gesture. Which is, of course, what a singer does.
Dilruba, esraj, sarangi, sitar — which is which?
These get muddled constantly, and the distinctions are simple once stated.
- Sitar — plucked, not bowed. Much bigger, with a gourd resonator. Related in spirit and in tuning logic, but a completely different physical activity.
- Dilruba — bowed and fretted. A larger, squarer body, and historically associated with North India and with Sikh devotional music, where it has a particular place.
- Esraj — very close to the dilruba, smaller, with a rounder body, more common in Bengal. Players argue about where one ends and the other begins, and the honest answer is that they are regional variants of one idea.
- Sarangi — bowed but fretless, played with the fingernails against the strings. Far harder, gloriously vocal, and a different instrument entirely despite the family resemblance.
Why you have probably heard one without knowing
The dilruba turns up in places people do not expect. It has a long and continuing role in kirtan and Sikh devotional music. It appears across Hindi film scores from the middle of the twentieth century, where its ability to shadow a singer made it enormously useful. And it reached Western pop in the 1960s, when the general enthusiasm for Indian instruments meant a good deal of studio time for anything with sympathetic strings — two dilruba players are on the session sheet for "Within You Without You", for a start.
If a record has a bowed sound that seems to hover somewhere between a violin and a voice, and it does not behave like an orchestral string section, this is a reasonable guess.
Is it hard to learn?
Less hard than you might fear, and in one specific respect easier than the sitar.
The bow arm takes a few weeks to stop sounding scratchy, as it does on any bowed instrument. The left hand is more forgiving than a violinist's, because the frets give you a reference — you are not hunting for an unmarked position. And the instrument is smaller, lighter and cheaper than a sitar, and takes less time to become bearable on.
What takes years is the same thing that takes years on any instrument in this tradition: knowing which slides belong to which raga, and when a note should arrive early, late, or from underneath. That is a question about raga rather than about the dilruba, and it is the part worth spending a life on.
The tuning is worth knowing about before you start, because it is not a one-off job (David Courtney's guide takes you through it string by string). The main strings are set relative to a chosen Sa rather than to concert pitch. The sympathetic strings are then tuned to the notes of the raga you are about to play — so they are retuned when you change raga, and there are a lot of them. This is normal, it is part of the preparation, and it is the reason a chromatic tuner is more use here than any preset.
What to listen for
Find a recording and listen for three things.
The halo. Every note comes with a faint cloud around it — that is the sympathetic strings answering, and it is the sound most people mean when they say something sounds Indian.
The absence of arrival. Western melody tends to move between fixed points. Here the movement between the notes is doing as much work as the notes, and often more.
The breathing. Because it can sustain indefinitely, a dilruba phrase tends to be shaped like a sung one — it swells and settles rather than staying flat. Once you have noticed that, you cannot un-notice it.
