This study is a Research and Development (R & D) study and was carried out atSMP N 1, SMPN 4, and SMPN 12 Surakarta. The procedure used in this researchis adapted from Borg and Galls (1983) simplified by Sugiyono (2013) whichincludes: (1) exploration study and (2) development study. Exploration studyinvolves textbook evaluation toward WERB and need analysis. The data arecollected using questionnaire, interview, and observations. In the developmentstudy, two experts of ELT and layout design were invited to validate the productbased on the criteria given by the researcher. The experts were asked to fill out aquestionnaire. This study is ended by conducting product try out and FGD withthe teacher and students. The draft was tried out three times until it reaches itsfeasibility. It was tried out in SMP N 1 Surakarta due to some considerations.The findings of this research are: (1) WERB for grade VII does not meet five ofthe seven criteria proposed by the researcher; and (2) song-based supplementarymaterials were developed under the theories of good textbook, good materials, andgood songs, and (3) the song-based supplementary materials are 74% validtheoretically and 83% valid practically.Finally, it is hoped that this study can be useful for the English teaching andlearning process, especially for schools applying Curriculum 2013. By identifyingthe strengths and weaknesses of WERB, teachers can adjust the teaching materialsand activities. Second, the song-based supplementary materials are expected to bepractically used in the classroom. Then, the supplementary materials are hoped toprovide enjoyment, motivation, and opportunity to the students. Lastly, otherresearchers can take into account the findings of this research when conductingtheir further research.Keywords: R & D, Curriculum 2013, WERB, songs, supplementary materials.