Penelitian ini bertujuan untuk mendeskripsikan bentuk musik dan teknik permainan Concerto in C Minor for Viola Karya Henri Casadesus. Concerto in C Minor for Viola termasuk karya musik klasik, dimainkan dalam format solo viola diiringi strings orchestra.

Dasar teori yang digunakan dalam meneliti bentuk musik dan teknik permainan dalam Concerto in C Minor for Viola karya Henri Casadesus yakni analisis bentuk musik Concerto, yang didalamnya menganalisis bentuk musik sonata, analisis bentuk lagu tiga bagian, analisis bentuk musik rondo dan terakhir, menganalisis teknik permainan pada solo viola.

Metode penelitian ini menggunakan penelitian deskriptif kualitatif karena tidak menggunakan angka-angka sebagai sumber datanya dan hasil penelitian memfokuskan penjabaran pada bentuk musik dan teknik permainan solo viola. Data dalam penelitian diperoleh dengan cara observasi, wawancara dan dokumentasi. Dan dianalisis dengan cara reduksi data, penyajian data dan penarikan kesimpulan. Adapun untuk menguji keabsahan data menggunakan triangulasi data.

Concerto in C Minor for Viola Karya Henri Casadesus dimainkan dalam tangga nada C Minor dan memiliki 3 movement. Movement I Allegro molto ma maestoso memiliki bentuk musik sonata (sonata allegro form) yang terdiri dari bagian eksposisi, development, dan rekapitulasi yang terdiri dari 157 birama. Movement II Adagio molto espressivo memiliki bentuk lagu 3 bagian yaitu ABA’ yang terdiri dari 80 birama. Movement III Allegro molto energico memiliki bentuk musik rondo yaitu ABA’CA’’ yang terdiri dari 175 birama dan terdapat cadenza ad libitum pada bagian A’’. Teknik permainan pada Concerto in C Minor for Viola terdapat teknik staccato, legato, detaché, vibrato, accent, tremolo dan multiple stops, serta terdapat ornamen appogiatura, acciacatura.

This research aims to describe the musical form and viola techniques of Concerto in C Minor for Viola by Henri Casadesus. Concerto in C Minor for Viola is classical music, played by viola solo with accompanied by a strings orchestra.

                    Basic Theory used in this researching musical forms and viola playing techniques in Concerto in C Minor for Viola by Henri Casadesus is analysis of concerto music form, which analyzing sonata allegro forms, Three part forms, and rondo form, and finally analyzing playing techniques by viola solo.

                    This research method uses descriptive qualitative research because it does not use any numbers as the data source and the results of the research focus on the music forms and solo viola playing techniques. The result of this research were obtained by observation, interview and documentation. And analyzed by reduction, presentation and inference. The data validity test uses data triaangulation.

            The Concerto in C Minor for Viola by Henri Casadesus is playes in C Minor scale and has 3 movements. Movement I Allegro molto ma maestoso has a sonata form (sonata allegro form) consisting of exposition, development, recapitulation consist of 157 bars. Movement II Adagio molto espressivo has a three part music form, ABA ’which consists of 80 bars. Movement III Allegro molto energico has a rondo music form that is ABA’CA”which consists of 175 bars, and there is cadenza ad libitum in section A”. The viola playing techniques at the Concerto in C Minor for Viola include staccato, legato, detaché, vibrato, accent, tremolo and multiple stops techniques, and there are appogiatura, acciacatura ornaments.