
Hideaki S. answered 03/21/23
AFFORDABLE AND QUALITY VIOLA TUTOR- 9 years of viola training
As everyone out here is saying, it really depends on how much you practice... however as one of my teachers told me, "change your strings when the seasons change". There could probably be a mathematical formula done on how to figure this out, depending on the instrument, hours played, enviroment, and type of instrument, but this hasnt been figured out yet. If you practice a 3-4 hours a day I'd say every season would be good.