Prelude cello strings are solid steel core strings, unaffected by temperature and humidity changes, and having 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. Scaled to fit 4/4 size cello with a playing length of 27 1/2 inches (700mm), heavy tension strings will allow for greater projection and volume potential. The J1011A aluminum wound A string performs at a slightly lower tension than the nickel wound A string, giving it easier bow response and a larger string diameter. The aluminum wound A string is available as a single string only, and is not part of the J1010 set.