Rock and roll - Wikipedia
https://en.wikipedia.org/wiki/Rock_and_rollRock and roll (often written as rock & roll, rock 'n' roll, or rock 'n roll) is a genre of popular music that evolved in the United States during the late 1940s and early 1950s. It originated from black American music such as gospel, jump blues, jazz, boogie woogie, rhythm and blues, as well as country music. While rock and roll's formative elements can be heard in blues records from the 1920s and in country records of the 1930s, the genre did not acquire its name until 1954.
Pre-filled Rock Roll - Salix Products
www.salixrw.com › product › rock-rollsRock Rolls provide an instant flexible solution to many scour problems particularly below low water level where pure bioengineering techniques will not function. When used in conjunction with Coir Rolls, Coir Pallets or live willow, Rock Rolls provide a solution which can support healthy invertebrate and even native crayfish populations. Watch our video with Dr Ruth Callaway of Swansea University talking about her research on our rock products.