Online marketplaces make instructional materials accessible to all, and Teachers Pay Teachers (TPT) is leading in U.S. online marketplaces with over seven million teacher created resources and over one billion downloads. The purpose of this study was to understand elementary music teachers' uses of Teachers Pay Teacher's online marketplace, and the characteristics of elementary music teachers and types of materials used on TPT are explored. Rooted in the ideas of Dewey’s democracy of education, TPT allows music teachers to share their own lesson planning materials with a wide audience and democratizes this traditional curriculum and lesson planning structure of education. This survey examined the use of supplementary purchases by U.S. elementary music teachers as compared with the experience teaching, education and approaches with types and price of items on TPT. Implications will guide further research on the supplementary use of online marketplaces, like TPT, by elementary music teachers. This session will highlight the curriculum planning challenges of U.S. music teachers, how they are using online marketplaces to facilitate student learning, which might inform practices globally as TeachersPayTeachers is an online website that democratizes lesson planning not just for the U.S., but for millions of teachers outside of the U.S..