Courtesy Sam Tsui Share this Page Casey Breves 0 Total Resources 1 Books Books by Casey Breves 1 Sort by Number of Resources Number of Awards Book Title Year Published Word Count Reading Level: ATOS® Reading Level: Lexile® Add Multiple Titles to Reading List Browse books by Casey Breves Why Do We Sing? by Sam Tsui and Casey Breves 4 Resources Add to Reading List Share this Book Images courtesy of publishers, organizations, and sometimes their Twitter handles.