(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2012/085915 A2 28 June 2012 (28.06.2012) P O P C T (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, G09B 15/02 (2006.01) CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, (21) International Application Number: HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, PCT/IL201 1/000961 KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, (22) International Filing Date: MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, 22 December 201 1 (22. 12.201 1) OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, (25) Filing Language: English TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (26) Publication Language: English (84) Designated States (unless otherwise indicated, for every (30) Priority Data: kind of regional protection available): ARIPO (BW, GH, 61/426,5 17 23 December 2010 (23. 12.2010) US GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, (71) Applicant (for all designated States except US): P.R. TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, SOUNDS LTD. [IL/IL]; 56 Inbar St., 30889 Caesarea DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, (IL). LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, (72) Inventor; and GW, ML, MR, NE, SN, TD, TG). (75) Inventor/Applicant (for US only): GOLDMAN, Yariv Shlomo [IL/IL]; 56 Inbar St., 30889 Caesaria (IL). Published: (74) Agents: R. ZANGO & CO. et al; 8 Jerusalem St., 42437 — without international search report and to be republished Netanya (IL). upon receipt of that report (Rule 48.2(g)) (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, < (54) Title: APPARATUS FOR TEACHING MUSIC THEORY © (57) Abstract: The present invention is directed to an apparatus adapted for finding notes, chords, and notes to a chord of a musical scale, mode or makam by a user and to methods thereof, the apparatus comprising at least two concentric discs and a scale index, o wherein a first disc comprises notes names and pointers, and a second disc comprises scale markers are grouped in branches having a geometric shape that ends with a pointing line (branch pointer) and divided into concentric radials. The apparatus may also be con - sidered as a compact mode/maqam/scale encyclopedia for hundreds of scales/modes/maqams/rags/dastgahs that provides the user a o fast, simple and convenient way to obtain information he/she needs about a selected scales, it's notes (easily translatable) and it's main chords instead of leafing through pages to locate similar information. APPARATUS FOR TEACHING MUSIC THEORY FIELD OF THE INVENTION The present invention is generally directed to an apparatus for teaching music playing, and more specifically, to an apparatus that may functionally be used as an educational instrument of music theory and/or as a working tool for musicians and players. The apparatus may further serve as jewelry and/or as a musical amulet. BACKGROUND OF THE INVENTION Relevant references to the present invention are the following: U.S. Patent Nos.: 10,217; 148,097; 1,467,032; 4,037,518. BRIEF DESCRIPTION OF THE INVENTION The present invention is generally directed to an apparatus that is functionally designed to visually express various aspects of music theory of various music systems including without limitation: Western music (e.g. European classical music, jazz, rock, blues), Eastern music (e.g. Hmdistani/Carnatic music, Persian music, Turkish music, Arabic music), and other music systems. The invention further provides methods of using the apparatus of the present invention to thereby allow a user finding the notes of any scale and any mode of each scale, to allow finding the chords that may be derived from that scale, and to further allow a user finding the notes in any chord of those scales. The present invention is aimed to provide an apparatus adapted for finding notes of a musical scale, mode or makam by a user comprising at least two concentric discs and a scale index, wherein a first disc comprises notes names and pointers, and a second disc comprises scale markers are grouped in branches having a geometric shape that ends with a pointing line (branch pointer) and divided into concentric radials; and wherein finding the notes by said user is obtained by the following steps: (a) Choosing a scale, mode or makam in which said user desires to play/learn and finding its marker in said scale index; (b) Locating the marker found in (a) on said second disc and aligning the pointing line of its branch with a pointer comprised on first disc of the scale key (note name) the user desires to play and/or learn, by rotating either one of first or second disc; and (c) Starting from the first note that is aligned with the scale marker and progressing clockwise on the second disc until completion of a full circle, wherein only the markers positioned on the same radial as the scale marker and that are identical to the scale marker in color/pattern, and that are now aligned with the notes of the chosen scale, mode or makam in the chosen scale key are the notes of the scale, mode or makam. The apparatus of the present invention is further adapted to allow a user finding chords in a scale or mode, and further finding notes to a chord in a specific scale or mode. The present invention further aims to allow a user transposing any of the above mentioned scales from and to any pitch under the division of the octave into 48 tones and to compare between and translate various musical systems. The present invention also allows a user finding scales of western music that do not fit the common intervals of tone or half a tone of the regular diatonic scale (e.g. Ionian #5). BRIEF DESCRIPTION OF THE DRAWINGS Examples illustrative of embodiments of the disclosure are described below with reference to figures attached hereto. In the figures, identical structures, elements or parts that appear in more than one figure are generally labeled with the same numeral in all the figures in which they appear. Dimensions of components and features shown in the figures are generally chosen for convenience and clarity of presentation and are not necessarily shown to scale. Some of the figures presented are in the form of schematic illustrations and, as such, certain elements may be drawn greatly simplified or not-to-scale, for illustrative clarity. The figures are not intended to be production drawings. The figures (Figs.) are listed below. FIGURE 1 is a schematic illustration of a musical apparatus in accordance with variations of the present invention. Figure 1A - schematic illustration of a musical apparatus of the invention comprising two layers: an inner disc and an outer disc; Figure IB - close up view of inner disc of the musical apparatus of figure 1A; Figure 1C - close up view of outer disc of the musical apparatus of figure 1A. FIGURE 2 is a schematic illustration of another variation of the outer disc of the musical apparatus of figure 1, in accordance with the present invention. FIGURE 3 is a schematic illustration of a musical apparatus in accordance with variations of the present invention that comprises a set of rings instead of discs. FIGURE 4 is a schematic illustration of a musical apparatus in accordance with one another variation of the invention. Figure 4A - schematic illustration of a musical apparatus of the invention comprising two concentric layers: an inner disc and an outer disc each rotating with reference to the other; Figure 4B -close up view of i ner disc of the musical apparatus of figure 4A; Figure 4C - close up view of outer disc of the musical apparatus of figure 4A. FIGURE 5 is a schematic illustration of another optional structure of a musical apparatus in accordance with variations of the present invention. FIGURE 6 is a schematic illustration of a specific implementation of the structure illustrated in figure 5 using combinations of colors, numbers and geometrical shapes establishing together a musical apparatus in accordance with the present invention. FIGURE 7 is a schematic illustration of a simplified variation of the apparatus of figure 1 and optional accessories for such variation. Figure 7A - musical apparatus; figures 7B-7E - schematic diagrams of various chords that may be positioned on musical apparatus of figure 7A so as to provide a user a visual illustration of the chords in a specific scale in accordance with variations of the present invention. 7B- Augmented chord; 7B - Diminished chord; 7C - Major chord; 7C - Triadic-sus-4 chord. DETAILED DESCRIPTION OF THE INVENTION In the following description, various aspects of a musical apparatus compatible with various music systems are described. The apparatus provided herein is a basic, simple apparatus, designed to visually express many aspects of various music systems, especially, of the western and broader eastern music theory. The apparatus may generally be composed of two or more concentric discs or rings.