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  2. List of Sikorsky S-70 variants - Wikipedia

    en.wikipedia.org/wiki/List_of_Sikorsky_S-70_variants

    This is a list of versions of the Sikorsky S-70 military helicopter family, that entered service starting in the 1979. It is in service with 35 countries globally, and is commonly known as the UH-60 Black Hawk, the name from its biggest user the United States Army.

  3. Sikorsky UH-60 Black Hawk - Wikipedia

    en.wikipedia.org/wiki/Sikorsky_UH-60_Black_Hawk

    The Sikorsky UH-60 Black Hawk is a four-blade, twin-engine, medium-lift utility military helicopter manufactured by Sikorsky Aircraft.Sikorsky submitted the S-70 design for the United States Army's Utility Tactical Transport Aircraft System (UTTAS) competition in 1972.

  4. Variation (music) - Wikipedia

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

    In music, variation is a formal technique where material is repeated in an altered form. The changes may involve melody, rhythm, harmony, counterpoint, timbre, orchestration or any combination of these. Variation is often contrasted with musical development, which is a slightly different means to the

  5. Sikorsky S-70 - Wikipedia

    en.wikipedia.org/wiki/Sikorsky_S-70

    AH-60 Arpia IV: Based on the UH-60L, is an indigenous development made by the Colombian Air Force, IAI (Elbit Systems), and Sikorsky. Main armament is the Spike NLOS and a Nexter THL-20 gun turret. [26] UH-60 Black Hawk: The basic military utility helicopter for the U.S. Army, with MH-60A, K, L, and M Special Operations variants.

  6. Sikorsky H-60 - Wikipedia

    en.wikipedia.org/wiki/Sikorsky_H-60

    The Sikorsky H-60 is a family of military helicopters built by Sikorsky Aircraft. All models use a modified mission symbol in addition to the 'H' vehicle type designator under the 1962 United States Tri-Service aircraft designation system (meaning, there is no aircraft named an "H-60" per se). The mission prefix (e.g. U, M, V) only has ...

  7. Glossary of music terminology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_music_terminology

    A variety of musical terms are encountered in printed scores, music reviews, and program notes. Most of the terms are Italian, in accordance with the Italian origins of many European musical conventions. Sometimes, the special musical meanings of these phrases differ from the original or current Italian meanings.

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  9. List of musical works in unusual time signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_musical_works_in...

    This is a list of musical compositions or pieces of music that have unusual time signatures. "Unusual" is here defined to be any time signature other than simple time signatures with top numerals of 2, 3, or 4 and bottom numerals of 2, 4, or 8, and compound time signatures with top numerals of 6, 9, or 12 and bottom numerals 4, 8, or 16.