The five lanes
The strip of string between the bridge and the fingerboard is only a few centimetres wide, and where in that strip your bow sits changes the sound completely. Teachers number it in five lanes — 1 right by the bridge, 5 over the fingerboard — and moving between them is one of the most useful things you can do to your tone.
What each end sounds like
- Toward the bridge (lanes 1–2) — the string is stiff there, so it takes a slower bow and more weight to speak. In return you get a bright, focused, powerful sound with lots of edge. It carries. It's also fussy — get the balance a little wrong and it scratches or skates.
- Toward the fingerboard (lanes 4–5) — the string is slack and responsive, so it wants a faster, lighter bow. The sound goes soft, veiled, flute-like — the Italians call it flautando, "flute-like". Easy to play, but it won't project.
- The middle (lane 3) — the forgiving default. A full, round, singing sound, and a wide margin for error. This is where you start every note and where most playing lives.
Hear it — the whole sweep
The extremes have names you already met when you learned to read them (Stage 3): playing in lane 1 is sul ponticello ("on the little bridge"); playing past lane 5 is sul tasto ("on the fingerboard"). Sweep between them and you hear the whole range.
How to play it
Adjust the bow as you go: lanes 1–2 slower and heavier, lanes 4–5 faster and lighter. Keep each note clean. This is the single best way to feel how the three controls trade.
Paul Rolland described the middle zone as sounding like a clarinet — "full, round" — the bridge end like an oboe — "brilliant, intense" — and the fingerboard end like a flute. Three reeds in one string.
Try it
Try
Play open D in lane 3 and get a good full sound. Now, without changing anything else, move the bow one lane toward the bridge — it will start to scratch. Add a little weight and slow down until it clears and rings brighter than before. Then go the other way, toward the fingerboard, and lighten and speed up until it turns soft and hollow. You've just played three real tone colours on one open string.
The usual mistake
Letting the bow drift between lanes without meaning to — usually toward the fingerboard, because it's easier there. The sound goes vague and won't carry, and you don't notice because each note is only slightly weaker than the last. Pick a lane for the phrase and hold it. Simon Fischer's image: ride the hair against the sounding point like a surfer riding against a wall of water — you're always leaning gently against that exact spot.