Topmusicanswers
Too much rosin on the bow hair produces a scratchy, unpleasant sound, while too little will cause the tone to fade out during your bow stroke. ... (But, don't forget to wipe off your instrument and strings afterward to prevent rosin build-up.)
How do I get my violin to stop screeching?
Keep the pressure and speed constant while bowing up and down. To avoid the squeaking, some people try to play with very little pressure all the time. Instead of the squeaking, you'll get whistle tones. Just wiping the strings with your bow solves the issue of squeaking, but doesn't create a beautiful sound.
Why does my violin sound dull?
Replace Your Strings
And older strings will sound dull and can begin to fray, which may scratch the fingerboard. A general rule of thumb for string replacement is that if you play over an hour each day, then you should replace your strings every 4-6 months.
