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, 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 considered as a compact mode/maqam/scale encyclopedia for hundreds of scales/modes/maqams/rags/dastgahs that provides the user a 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.
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