Weasels ( /ˈwiːzəl/) are mammals forming the genus Mustela of the Mustelidae family. They are small, active predators, long and slender with short legs.

Weasels vary in length from 12 to 45 centimetres (5 to 18 in), and usually have a red or brown upper coat and a white belly; some populations of some species moult to a wholly white coat in winter. They have long slender bodies, which enable them to follow their prey into burrows. Their tails may be from 22 to 33 centimetres (9 to 13 in) long. Weasels have a reputation for cleverness and guile.

Weasels feed on small mammals, and have from time to time been considered vermin since some species took poultry from farms, or rabbits from commercial warrens. Weasels occur all across the world except for Antarctica, Australia, and neighbouring islands.

The English word "weasel" was originally applied to one species of the genus, the European form of the Least Weasel (Mustela nivalis). This usage is retained in British English, where the name is also extended to cover several other small species of the genus. It is thought that the name "weasel" comes from the Anglo-Saxon root "weatsop" meaning "a vicious bloodthirsty animal". However, in technical discourse and in American usage the term "weasel" can refer to any member of the genus, or to the genus as a whole. Of the 17 extant species currently classified in the genus Mustela, ten have "weasel" in their common name. Among those that do not are the stoat or ermine, the polecats, the ferret, and the European Mink (the superficially similar American Mink is now regarded as belonging in another genus, Neovison).

Frank Vincent Zappa (December 21, 1940 – December 4, 1993) was an American composer, singer-songwriter, electric guitarist, recording engineer, record producer and film director. In a career spanning more than 30 years, Zappa wrote rock, jazz, orchestral and musique concrète works. He also directed feature-length films and music videos, and designed album covers. Zappa produced almost all of the more than 60 albums he released with the band The Mothers of Invention and as a solo artist. While in his teens, he acquired a taste for percussion-based avant-garde composers such as Edgard Varèse and 1950s rhythm and blues music. He began writing classical music in high school, while at the same time playing drums in rhythm and blues bands; he later switched to electric guitar.

He was a self-taught composer and performer, and his diverse musical influences led him to create music that was often impossible to categorize. His 1966 debut album with The Mothers of Invention, Freak Out!, combined songs in conventional rock and roll format with collective improvisations and studio-generated sound collages. His later albums shared this eclectic and experimental approach, irrespective of whether the fundamental format was one of rock, jazz or classical. His lyrics—often humorously—reflected his iconoclastic view of established social and political processes, structures and movements. He was a strident critic of mainstream education and organized religion, and a forthright and passionate advocate for freedom of speech, self-education, political participation and the abolition of censorship.

The Mothers of Invention was an American rock band from California that served as the backing musicians for Frank Zappa, a self-taught composer and performer whose diverse musical influences led him to create music that was often impossible to categorize. Their work is marked by the use of sonic experimentation, innovative album art, and elaborate live shows.

Originally an R&B band called The Soul Giants, the band's original lineup included Ray Collins, David Coronado, Roy Estrada and Jimmy Carl Black. Zappa was asked to take over as the band's guitarist following a fight between Collins and the band's original guitarist. Zappa insisted that the band perform original material, changing their name to The Mothers. Founded in 1964, the band first became popular playing in California's underground music scene in the late 1960s. Under Zappa's leadership, the band signed to Verve Records, releasing a début album, Freak Out! (1966), with a lineup which consisted of Zappa, Collins, Black, Estrada and Elliot Ingber.