quanben‘s definition of classical music is a definition formed by the following aspects,
1. music written to seriously express, reflect and/or just indicate a certain set of emotions, feelings, notions, and/or just melodical/musical motives/requirements in optional personal contexts such as passions and ambiences;
2. using classically consolidated musical instruments, not ruling out limited to medium use of other novel special ones;
3. using some well accepted and established forms and/or structures that work (such as sonata form, or other classical or modern forms) with optional techniques such as texture and counterpoint etc.
原文：http://www.cnblogs.com/quanben/p/4793639.html