If you cannot find a pre-patched SF2, you can DIY it using a free tool like .

Are you trying to program a or a full orchestral string section ?

Real violinists never play at a perfectly static volume. Use a MIDI controller knob or draw automation curves for MIDI CC#11 (Expression) to constantly fluctuate the volume and intensity of your melodies. 2. Vary the Velocity

But if you have ever downloaded a free violin SoundFont, you know the pain. The "G" string sounds rich, but the "E" string screams like a mosquito. The sustain is too short, or the vibrato is out of sync.