Prelude viola strings are solid steel core strings, unaffected by temperature and humidity changes, and have excellent bow response. Prelude strings have the warmest sound available in an economy, solid steel core string design. Prelude is the educator"s preferred choice for student strings due to their unique blend of warm tone, economy, and durability. The long scale strings are gauged specifically to fit long-scale viola (body length 16-16 1/2 inches) with a playing length of 15 inches (380mm).