these tunings overlap other categories, especially open and modal tunings. Miscellaneous or "special" tunings This category includes everything that does not fit into any of the other categories, for example (but not limited to): tunings designated only for a particular piece; non-western intervals and modes; micro- or macro-tones(half sharps/flats, etc.); and "hybrid tunings" combining features of major alternate tuning categories – most commonly an open tuning with the lowest string dropped. See also Bass guitar tuning List of guitar tunings Mathematics and music Open G tuning Stringed instrument tunings DADGAD Notes Citation references References Zipped Microsoft Word Document Further reading External links