In the case of the class being a week long I take the auditors and active students through a daily warmup which includes singing, scales, vibrato, tone development, studies and velocity.

• 至于人家会不会取笑听课的低手，我看是个人品的问题，在德国英国或是美国没人会笑你的。水平低的地方，才有五十步笑百步。