Teachers play an important role in learning. As a professional teacher, supervision is needed to improve the implementation of the teaching process. The purpose of this literature review is to examine and analyze the impact of academic supervision on improving teacher performance. The method in this study was carried out by reviewing related articles about academic supervision and teacher performance. The research sample was focused on the Google Scholar search engine with academic guidance and teacher performance as the main research constraints and then identified. The results of the article review show that most of the role of academic supervision is very influential in improving teacher performance. Therefore, effective academic supervision requires the will of the principal to plan, implement and evaluate supervision. Purpose: The purpose of this literature review is to examine and analyze the impact of academic supervision on improving teacher performance. Methodology: The review process begins with a search engine, Google Scholar, to find articles with keywords. "The Effect of Academic Supervision in Improving Teacher Performance". Results: The results of the analysis show that most of the articles focus on the impact of supervision on improving teacher performance. Limitations: The limitation of this study is that it only discusses the supervision of the principal on teacher performance. Contribution: This research is useful for the scope of educational organizations, especially as an evaluation material for teachers and school principals Keywords: 1. Supervision 2. Teacher performance

This paper contains the actualization of resistance symbols contained in the performances of Trahgali Soulja, a hip-hop music group based in Surakarta. This includes reviewing the audience’s response to the music performed. The problems that arise are (1) the efforts of the Soulja Trahgali music group in constructing the symbols of resistance, (2) the form of actualization of ideas or the construction of symbols through the stage actions performed by Trahgali Soulja that illustrate the ideology of resistance, and ( 3) audience’s response to the stage action offered by Trahgali Soulja. The production and packaging of Trahgali Soulja’s performances are carried out on the backstage/back region - including the discovery of musical ideology, the process of interpreting the ideology of resistance, and the behind-the-scene communications among players. Then a scenario for the performance is employed in the stage action on the front stage/front region, and of course there are elements to support the performances being prepared. The positive response is shown by the audience with the emergence of the Red Ax Soldier community which supports the entire behavior of Trahgali Soulja, and not even rarely did this community adopt the musical behavior of Trahgali Soulja. In addition, social media such as Facebook, YouTube and Instagram also become the showrooms for this group’s hip-hop songs.Keywords: actualization, symbol of resistance, hip-hop music performances, trahgali soulja.