Madam Chiu Yu Lang has had 30 years of on-stage performance experience and enjoys international fame. She has participated in numerous performances, and most excels at "Madame Butterfly". This paper hopes to make use of Madam Chiu''s valuable experience in order to better equip performers of "Madame Butterfly" with approches of their own.

This paper discusses <A Beautiful Day>, which is the most famous aria in Puccini''s "Madame Butterfly", for the purpose of understanding Puccini''s life and the background and styles of his work. This paper also walks you through the ups and downs of the renowned vocal musician - Madam Chiu Yu Lang during her years of further studies. Through precise fine-tuning by Madam Chiu, one can truly appreciate the skills involved in refining the performing of this song.

Madam Chiu thoroughly analyzes this temperamental song in terms of its speed change, tone control, breath and timbre adjustment, as well as the creation of ambience. All these factors contribute to increased understanding and room for performance versatility for a performer. Finally, I hope the study of < Un bel di vedremo> can take the skills of vocal performers to the next level.