This document discusses research methods for studying music education, including questionnaires, opinionnaires, interviews, and sampling. Questionnaires allow researchers to gather information from many scattered respondents through self-administered forms. They provide both qualitative and quantitative data but have low response rates and require educated, cooperative respondents. Interviews are more flexible and allow for discussion, but are more expensive. Samples are used to study populations when examining every individual is infeasible due to large sizes. The document provides examples of questions for questionnaires and opinionnaires related to music education topics.