Leopold Mozart, father of the famed Wolfgang Amadeus comments on this very same problem in his Treatise on the fundamental principles of violin playing, written in 1756!
“At this point I cannot but touch on the foolish system of teaching which is pursued by some when instructing their pupils; namely, that of affixing little labels with the letters written thereon, on the finger-board of the pupil's violin, and even of marking the place of each note on the side of the finger-board with a deep incision or, at least, with a notch. If the pupil has a good musical ear, one must not avail oneself of such an extravagance. "
Although it may take a while, I always get amazed at how quickly students start noticing even the most miniscule changes in pitch and start correcting themselves. As Carl Flesch, one of the most important violin pedagogues of the 20th Century said: "To play in tune in terms of physics is an impossibility. Playing in tune is nothing but an extremely rapidly and cleverly executed correction of the initially imprecise pitch. By contrast, out of tune playing means that the note remains as false during its total duration as it was initially."
Even though learning the violin may be difficult, it can also be an extremely enjoyable and rewarding experience. After all, something as valuable as playing this amazing instrument is certainly worth all the effort!
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