The problem of this study was to measure the effect upon the tone quality of singers resulting from identifying a specific goal, modeling with a cassette tape of the student's own voice, prescribing practice, and giving verbal approval. On the basis of the findings, these conclusions are drawn. (1) There is no significant difference in prescribing practice of an identified goal, utilizing a model or giving verbal approval. (2) Higher gain in pretest - posttest scores for the experimental groups while the control group showed the lowest gain suggests these teaching methods may be effective. (3) A high correlation of raters can be attained by the training method used in this study.