| 摘要 |
PCT No. PCT/NZ93/00109 Sec. 371 Date Jun. 26, 1995 Sec. 102(e) Date Jun. 26, 1995 PCT Filed Nov. 11, 1993 PCT Pub. No. WO94/11857 PCT Pub. Date May 26, 1994Disclosed is apparatus comprising at least two elements whose positions relative to each other are alterable, and in which at least a portion of each element is visible during use of the apparatus, and wherein a first of said elements exhibits an indicated sequence, and a second of said elements exhibits at least one of a group of musical representations comprising: an alphabetic representation of musical notes; a representation of a keyboard; a representation of finger positions on an instrument; an accepted musical notation; and wherein the relative positions of said first and second elements may be altered so that correlating said indicated sequence with a said musical representation indicates at least one of a scale or chord. Various embodiments of apparatus may be used in determining scales, and variations and modes thereof, find use in creating and determining chords, find use in key transposition and/or determining fingering on keyboards and frets.
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