权威解释：live music：A concert is a live performance, usually of music, before an audience. The music may be performed by a single musician, sometimes then called a recital, or by a musical ensemble。
实况音乐：通常是指个人独奏，或乐队合奏的音乐会，或小、中、大型的各类演唱会。实况音乐 是相对于 录音棚制作及后期合成 的灌制音乐而言的。
