Larsen Rosin for Violin. Created by Larsen Strings, Larsen rosins are designed to create a refined and delicate friction that is ideally tailored to complement the Larsen string range. Larsen's in-house blend of choice raw materials have been specifically developed to match the requirements of violin, viola and cello respectively, to optimise adhesion whilst minimising unnecessary noise, creating a seamless blend between bow and strings. Ideally suited for intermediate to advanced players, Larsen rosin is available in two recipe variants; Larsen Rich Amber Original and Larsen Red. We recommend that Larsen rosins are not used in combination with other brands.