The Model Development of Authentic Assessment Instrument Used Google Classroom in Learning Band Music

The reason music learning assessment instruments need to be developed is so that the expected learning outcomes can be achieved in increasing knowledge, attitudes and musical arts skills based on authentic. If the music learning assessment instrument is right on target in seeing students 'competencies, the level of quality of students' abilities will be achieved in accordance with the expected learning outcomes. Google classroom is one of solutions of Authentic Assessement Instrumen in Learning Band Music. This research is a development study and uses the development of the ADDIE model. ADDIE model was chosen because this model is suitable to be applied in learning in schools. The results of the product development of the Authentic Assessment Instrument Model in Band Music Learning have a score of 78.82 and are classified as valid. The practicality of the authentic assessment instruments in learning band music is 81.56 and is classified as very practical. The effectiveness of authentic assessment instruments in learning band music is 82.1 and is classified as very effective.