Singing is the act of producing musical sounds with the voice, and augments regular speech by the use of both tonality and rhythm. One who sings is called a singer or vocalist. Singers perform music (arias, recitatives, songs, etc.) that can be sung either with or without accompaniment by musical instruments. Singing is often done in a group of other musicians, such as in a choir of singers with different voice ranges, or in an ensemble with instrumentalists, such as a rock group or baroque ensemble.
Progressive metal is a subgenre of both progressive rock and heavy metal, originating in the United Kingdom and the United States in the late 1980s. Progressive metal blended elements of heavy metal and progressive rock music, taking the loud "aggression" and amplified electric guitar-driven sound of the former, with the more experimental, complex and "pseudo-classical" compositions of the latter. Progressive metal often utilises the conceptual themes associated with progressive rock. Throughout the years, progressive metal has borrowed influences from several other genres, including classical and jazz fusion music.
Silliness is defined as engaging in "a ludicrous folly", showing a "lack of good sense or judgment", or "the condition of being frivolous, trivial, or superficial". In television, film, and the circus, portrayals of silliness such as exaggerated, funny behavior are used to amuse audiences. Portrayals of silliness, provided by clowns and jesters, are also used to lift the spirits of people in hospitals.