Dorso

Metal (often used to mean heavy metal in its broad, umbrella sense) is a loud, guitar-driven style of rock defined by high-gain distortion, emphatic and often martial rhythms, and a dense, powerful low end. It foregrounds riff-based songwriting, dramatic dynamics, virtuosic guitar solos, and commanding vocals that range from melodic wails to aggressive snarls and growls. Harmonically, metal favors minor modes, modal color (Aeolian, Phrygian), chromaticism, and tritone-inflected tension, while thematically it explores power, mythology, the occult, social critique, fantasy, and existential subjects. While adjacent to hard rock, metal typically pushes amplification, distortion, precision, and thematic intensity further, forming a foundation for many specialized subgenres.

Novelty is a branch of popular song that foregrounds a "novel" hook—gimmicks, topical jokes, exaggerated sound effects, or playful pastiches—designed to grab immediate attention and often to amuse. It overlaps with comedy songs and musical parody, but not every humorous song is a novelty; the emphasis is on the conceit itself and its instant recognizability. The term emerged in the Tin Pan Alley era as one of the three big divisions of commercial popular music (alongside ballads and dance numbers), and the style surged in popularity in the 1920s–30s, with later revivals in the 1950s–60s and recurring viral waves in the internet age.