We had paid all balance for music lesson last year 2009. We keep all copy of checks. One year later which is 2010, Pro Musica Strings sent a letter to ask money again. It is not acceptable. We took class from Kevin Lin's home. The room is NOT bright. We can hear bathroom running when you were taking class. It is bad experience for us to take violin class from Kevin Lin who is represent Pro Musica Strings, Inc.