創作於1969到1975年之間的《神聖之音》（Hiérophonies）系列可說是旅法日本作曲家平義久（Yoshihisa Taira, 1937-2005）音樂創作生涯的起點，也是他摸索出自己音樂語言的指標性作品。本論文擬探討此系列中的第四首作品－為長笛家族樂器所作的獨奏曲《神聖之音Ⅳ》（Hiérophonie Ⅳ, 1971）。透過演奏法觀點檢視《神聖之音Ⅳ》中所展現的一些音樂語法特色，除了希望能對瞭解平義久的音樂有所幫助之外，也期望能夠吸引更多愛樂者與演奏者親近這位作曲家的作品。

＂Hiérophonie IV＂ (1971) for flute solo written by the Japanese composer Yoshihisa Taira (1937, Tokyo-2005, Paris) is included in a series of his representative works under the same title. From a point of view of interpretation, I shall try to reveal some characters of his musical language by tracing the special aspects presented in the piece. I will also try to discuss some common concerns, the comparable aesthetics, and musical thinking shared by the composers of his generation demonstrated in their musical works for flute solo; in spite of the differences of their cultural heritages, this will hopefully help in the interpretation and appreciation of Taira's music.