very useful to check from time to time whether your instrument
has the best possible sound.
are several things that can be done to improve the sound.
Changes in temperature and especially in humidity affect
wooden instruments all the time. This means that the body
of the instrument is under constant changes and sound varies
a lot. Loosen parts, especially in old instruments, affect
the sound . The set-up needs constant care. Most common
procedures: new bridge, soundpost, strings do play a big
role in violins sound.