The aim of this study is to determine the effectiveness of group counseling with cognitive behavior therapy approach using passive music therapy technique to reduce the academic anxiety of students who is writing thesis. The research used quasi-experimental design (pretest, posttest, and follow-up). Group counseling was conducted for five meetings, and follow-up was performed two weeks after the treatment. Research subjects were seven students. Purposive sampling technique was used to select the subjects, that is based on inclusion criteria and level of academic anxiety which is obtained from academic anxiety scale (rxy = 0.536-0.823, coefficient alpha = 0.963). The results showed that group counseling with cognitive behavior therapy approach using passive music therapy technique was significantly effective to reduce the students' academic anxiety in pretest vs. posttest and pretest vs followup, but in posttest vs. follow-up there was a slight increase in academic anxiety. Passive music therapy which is integrated into group counseling with cognitive behavior counseling approach, it is not only able to solve the individual problems but also able to help individuals to analyze their thoughts and behaviors through passive music activities with guided imagery.Abstrak: Tujuan penelitian ini untuk mengetahui efektivitas pelaksanaan konseling kelompok pendekatan cognitive behavior therapy (CBT) dengan teknik passive music therapy dalam mereduksi academic anxiety mahasiswa penyusun skripsi. Penelitian ini menggunakan desain quasi-eksperimental (pretest, posttest, dan follow-up). Konseling kelompok dilaksanakan selama lima pertemuan, dan follow-up dilakukan dua minggu setelah treatment. Subjek penelitian yang digunakan dalam penelitian ini yaitu tujuh mahasiswa. Pemilihan subjek menggunakan teknik purposive sampling yaitu didasarkan pada kriteria inklusi dan tingkat academic anxiety yang diperoleh dari academic anxiety scale (rxy = 0.536-0.823, coefficient alpha = 0.963). Hasil penelitian menunjukkan bahwa konseling kelompok pendekatan CBT dengan teknik passive music therapy secara signifikan efektif untuk mereduksi academic anxiety mahasiswa pada saat pretest vs posttest dan pretest vs follow-up, namun pada saat posttest vs follow-up terjadi sedikit peningkatan academic anxiety. Passive music therapy yang diintegrasikan dalam konseling kelompok pendekatan CBT tidak hanya dapat mengatasi masalah individu, tetapi juga dapat membantu individu menganalisis pikiran dan perilaku mereka sendiri, melalui aktivitas musik pasif dengan guided imagery.