other and sound muddy.
because nylon strings are a bit more flexible and stretchy than metallic strings it can sometimes be best to tune upward so that you are tightening the string. if lowering a nylon string it could slip very slightly. if a guitar has only recently been strung with nylon strings this tends to be the case. once newly strung, nylon strings will go flat for the first couple of days and need more tuning until they finally tighten. this mostly applies to the smoother g, b and high e strings. the lower strings of low e, a and d are usually metal wound so have more grip.
the 12th 