In opera education, alongside vocal training, another significant element is the selection of pieces that will allow students to develop both their technical skills and artistic expression abilities, as well as the determination of an individualized repertoire for each vocal student. In this context, repertoires consisting of song forms such as lied, chanson, and romance, generally known as art songs, not only help opera students improve their vocal techniques but also contribute to the development of their artistic expression skills. The study of German lieder, in particular, and art songs in general, assists opera students in strengthening their breath control, accurate intonation, and expressive power, while also contributing to the preservation of vocal health.

Works composed in this form, especially Franz Schubert's lieder, are frequently encountered in conservatory curricula. These types of works, which generally contain relatively broad melodic and dynamic ranges, help opera students learn to use their voices in a controlled and flexible manner. In this way, opera students enhance their vocal and breath control competencies and learn to sing more effectively in stage performances.

The selection and study of works from the lied and art song repertoire that are suitable for the voice of each opera student are also important for learning the articulation characteristics and prosodic structures of different languages. For many opera students, these types of works play a fundamental role in expanding their repertoire while also overcoming the technical difficulties experienced during the vocal training process. Moreover, these works improve opera students' dramatic expression abilities, as art songs, though sometimes quite short, typically contain deep and powerful artistic content.

In this context, it is clear that working on a repertoire that includes lieder and art songs from the early years of vocal training will contribute to the student's musical development and vocal technique. This study will analyze the effects of lieder and art songs on the development of vocal technique and artistic expression abilities within the framework of vocal education provided to opera students.