Violists need highly responsive and long-lasting strings. Spirocore VIOLA Strings deliver both. Spirocore strings have ultra-flexible multiwire spiral rope cores. Whether you're performing a smooth arco passage or a circus-like cacophony of pizzicatos, these strings make everything you play sound incredible. Thomastik-Infeld has been producing high-end orchestral and fretted instrument strings for more than 100 years, and Spirocore viola strings are among their best. Smooth-edged, homogenous, and muscular.