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  2. Gabriel's horn - Wikipedia

    en.wikipedia.org/wiki/Gabriel's_horn

    The apparent paradox formed part of a dispute over the nature of infinity involving many of the key thinkers of the time, including Thomas Hobbes, John Wallis, and Galileo Galilei. [12] The analogue of Gabriel's horn in two dimensions has an area of 2 but infinite perimeter. There is a similar phenomenon that applies to lengths and areas in the ...

  3. Chord chart - Wikipedia

    en.wikipedia.org/wiki/Chord_chart

    A chord chart. Play ⓘ. A chord chart (or chart) is a form of musical notation that describes the basic harmonic and rhythmic information for a song or tune. It is the most common form of notation used by professional session musicians playing jazz or popular music.

  4. Riemann sum - Wikipedia

    en.wikipedia.org/wiki/Riemann_sum

    The sum is calculated by partitioning the region into shapes (rectangles, trapezoids, parabolas, or cubics—sometimes infinitesimally small) that together form a region that is similar to the region being measured, then calculating the area for each of these shapes, and finally adding all of these small areas together.

  5. Sheet music - Wikipedia

    en.wikipedia.org/wiki/Sheet_music

    Sheet music can be used as a record of, a guide to, or a means to perform, a song or piece of music. Sheet music enables instrumental performers who are able to read music notation (a pianist, orchestral instrument players, a jazz band, etc.) or singers to perform a song or piece. Music students use sheet music to learn about different styles ...

  6. Trumpet - Wikipedia

    en.wikipedia.org/wiki/Trumpet

    The trumpet group ranges from the piccolo trumpet—with the highest register in the brass family—to the bass trumpet, pitched one octave below the standard B ♭ or C trumpet. Trumpet-like instruments have historically been used as signaling devices in battle or hunting, with examples dating back to the 2nd Millenium BC. [ 1 ]

  7. F major - Wikipedia

    en.wikipedia.org/wiki/F_major

    F major is the home key of the English horn, the basset horn, the horn in F, the trumpet in F and the bass Wagner tuba. Thus, music in F major for these transposing instruments is written in C major. These instruments sound a perfect fifth lower than written, with the exception of the trumpet in F which sounds a fourth higher.

  8. Accidental (music) - Wikipedia

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

    In German music notation, the letter B or b always designates B ♭ while the letter H or h – a deformation of a square b – designates B ♮. In the High Middle Ages , a widespread musical tradition was based on the hexachord system defined by Guido of Arezzo . [ 8 ]

  9. B-flat major - Wikipedia

    en.wikipedia.org/wiki/B-flat_major

    Many transposing instruments are pitched in B-flat major, including the clarinet, trumpet, tenor saxophone, and soprano saxophone. As a result, B-flat major is one of the most popular keys for concert band compositions.