In this thesis, we are studying about a major role plays multiple characters in the 《Erlkönig》 and pieces of 《Jekyll & Hyde》 . Firstly, we are discussing about how to adjust the changing skill of voice. Secondly, we would like to discuss about the advantage of those two pieces within the same construction of a major character play in varied roles in the background of different era and singing style. Thirdly, this thesis would like to discover the impact of two different singing styles toward to the body which making the voice. There are five chapters as following:
1. Instruction- we would like to discuss about the motivation and purpose of this thesis.
2. The background of the pieces
a. the brief life story of the composer
b. the connection between the composers and the pieces which they used
c. the influence of the background of era toward to the pieces
3. The analysis of singing style
a.. the analysis of the singing skills in the German
b. the analysis of singing skill of opera
c. the impact of two different singing styles toward to the body which making the
voice
4. The analysis of music and explanation
a. the analysis and explanation of《Erlkönig》
b. the analysis and explanation of《Jekyll & Hyde》
5. Conclusion – In this chapter, we would like to discuss the advantage and disadvantage of two different pieces which are played in the modern explanation (condition) and the combination of possibility and necessity.
Keywords: 《Erlkönig》, 《Jekyll & Hyde》, Franz Schubert , Frank Wildhorn, multiple character, Lied,