Thomastik Infeld Spirocore viola strings are a warm, projecting set of strings made of multi-wire, spiraled steel core (similar to a rope core). Known for their versatility between arco and pizzicato, Spirocore strings offer a dark, warm sound with strong projection. These strings are designed for a more pliable touch under the fingers, while remaining somewhat responsive and focused. Spirocore strings are similar to Thomastik Infeld Superflexible strings in warmth, with greater clarity of sound. The Spirocore C string is a popular choice in mixed sets.

Thomastik Infeld Spirocore viola string composition:

A string: Chromesteel over Steel Spiral Core, ball end

D string: Chromesteel over Steel Spiral Core

G string: G Chromesteel or Silver over Steel Spiral Core

C string: C Chromesteel or Silver or Tungsten over Steel Spiral Core

In 4/4 size, medium gauge: C tungsten available also in heavy gauge