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A vertical bell lyre in use by the National Marching Band of the RAF Air Cadets. In the United Kingdom, the United States, and Canada, a form of glockenspiel is called a bell lyre, bell lyra, or lyra-glockenspiel. [11] The bell lyre is a form of glockenspiel commonly used in marching bands. [12]
Computer glasses may refer to: Blue-light blocking glasses, to try to reduce eyestrain from computer use; Smartglasses, glasses with computer technology
The American Academy of Ophthalmology (AAO) does not recommend special eyewear for computer use, [13] [14] although it recommends using prescription glasses measured specifically for computer screen distance (depending on individuals, but possibly 20–26 inches from the face), which are not the same as "blue-light blocking" glasses. [21]
Instruments commonly part of the percussion section of a band or orchestra. These three groups overlap heavily, but inclusion in any one is sufficient for an instrument to be included in this list. However, when only a specific subtype of the instrument qualifies as a percussion instrument, only that subtype is listed here.
Maurice Ravel preferred the keyboard version of the instrument because it can play a true ff dynamic for brilliance and iridescence in orchestral climaxes. [3] In the late 20th century, the firm of Bergerault began manufacturing a three-octave (F 2 –E 4 ) mallet instrument with a damping mechanism operated by a foot pedal, which is capable of ...
This underlies the division of the orchestral percussion section into auxiliary percussion, tuned percussion and timpani, and is the reason percussive keyboard instruments such as the celesta are excluded from the percussion section. Origins, cultural significance or tradition, for example grouping instruments as Latin percussion or as African ...
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