Schools across the country should place more emphasis on music programs. There are many benefits to consider. For example, studying music can help students perform better in other subject areas. Concepts such as fractions and ratios are important to the study of music. Therefore, students who learn to read and play music also learn basic principles of math. Additionally, participation in music programs can improve self-esteem. Students improve their confidence by performing alone or with groups. This confidence can help them become more successful in other areas of life. Which type of evidence would best support the argument that music programs help students succeed?