A common mistake is pressing too hard with the fingers, which stiffens the hand and ruins intonation.
To prevent the hand from "locking up," Fischer suggests mobility exercises where you move the hand in small circles or pull the knuckles toward/away from the neck while keeping the fingers in place. This ensures every joint remains free even when stopping multiple notes. The Third Tone (Difference Tones) simon fischer double stops pdf
A common error is pressing harder with the bow to play two strings. Fischer notes that playing double stops requires less downward pressure and more precise arm balance. The bow must ride exactly on the bridge-ward slope of both strings simultaneously, dividing its weight evenly (or as demanded by the voicing). Step-by-Step Practice Methods A common mistake is pressing too hard with