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  2. Dividing a circle into areas - Wikipedia

    en.wikipedia.org/wiki/Dividing_a_circle_into_areas

    The number of points (n), chords (c) and regions (r G) for first 6 terms of Moser's circle problem. In geometry, the problem of dividing a circle into areas by means of an inscribed polygon with n sides in such a way as to maximise the number of areas created by the edges and diagonals, sometimes called Moser's circle problem (named after Leo Moser), has a solution by an inductive method.

  3. List of musical symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_musical_symbols

    Musical symbols are marks and symbols in musical notation that indicate various aspects of how a piece of music is to be performed. There are symbols to communicate information about many musical elements, including pitch, duration, dynamics, or articulation of musical notes; tempo, metre, form (e.g., whether sections are repeated), and details about specific playing techniques (e.g., which ...

  4. Musical form - Wikipedia

    en.wikipedia.org/wiki/Musical_form

    In music, form refers to the structure of a musical composition or performance.In his book, Worlds of Music, Jeff Todd Titon suggests that a number of organizational elements may determine the formal structure of a piece of music, such as "the arrangement of musical units of rhythm, melody, and/or harmony that show repetition or variation, the arrangement of the instruments (as in the order of ...

  5. Section (music) - Wikipedia

    en.wikipedia.org/wiki/Section_(music)

    Rhythm changes bridge (B section of an AABA form) in the key of C. Play ⓘ. In music, a section is a complete, but not independent, musical idea. [1] Types of sections include the introduction or intro, exposition, development, recapitulation, verse, chorus or refrain, conclusion, coda or outro, fadeout, bridge or interlude.

  6. Harmony - Wikipedia

    en.wikipedia.org/wiki/Harmony

    It is the same piece of music, as long as the intervals are the same—thus transposing the melody into the corresponding key. When the intervals surpass the perfect Octave (12 semitones), these intervals are called compound intervals , which include particularly the 9th, 11th, and 13th Intervals—widely used in jazz and blues Music.

  7. Division (music) - Wikipedia

    en.wikipedia.org/wiki/Division_(music)

    Theme and some possible divisions. In music, division (also called diminution or coloration) [clarification needed] refers to a type of ornamentation or variation common in 16th- and 17th-century music [1] [irrelevant citation] in which each note of a melodic line is "divided" into several shorter, faster-moving notes, often by a rhythmic repetition of a simple musical device such as the trill ...

  8. Musical notation - Wikipedia

    en.wikipedia.org/wiki/Musical_notation

    Jeong-gan-bo specifies the pitch by writing the pitch's name down in a box called 'jeong-gan'. One jeong-gan is one beat each, and it can be split into two, three or more to hold half beats and quarter beats, and more. Also, there are many markings indicating things such as ornaments. Most of these were later created by Ki-su Kim.

  9. Glossary of music terminology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_music_terminology

    One or "a" (indefinite article), as exemplified in the following entries un poco or un peu (Fr.) A little una corda One string (i.e., in piano music, depressing the soft pedal, which alters and reduces the volume of the sound). For most notes in modern pianos, this results in the hammer striking two strings rather than three.