片頭曲(OP)

Opening Theme (Op) ['opənɪŋ sɔŋ]片頭曲

片頭曲（オープニングテーマ/ソング， Opening Theme/Song， 簡稱OP）是電視劇或電視動畫劇初播放的樂曲、歌曲，（但日本動畫和電視劇常在前情提要前）。數目如多於一首歌的，在隨後發行的原聲CD、及動畫資料中會以OP1、OP2或主題曲（片頭曲）一、主題曲（片頭曲）二...等來表示。部份作品的片頭曲裡會顯示原作或編劇、導演、製作、贊助商、片頭曲詞曲歌手等訊息。有些沒有片尾曲的作品，會加上腳本、聲優或演員等（因此有像ONE PIECE片頭曲一樣長達2分30秒的）。這些只是常例，依作品會有不同情形，目前一首片頭曲通常會用13～26集（一季到兩季份），超長番的話有可能持續一年。

此外，部分電視公司在播放外購電視劇或動畫時會將其剪片，或是不播出，也有轉為其他歌曲的。

Opening theme (オ プ ニ ー ー マ ン ¥ ° Te / ソ ン ¥ °, Opening Theme / Song, abbreviated OP) is a television drama or animation music broadcast in early drama, songs, (but Japanese animation and TV dramas often in the former intelligence summary ago). If the number is more than one song, and in the subsequent release of the Soundtrack CD, and animation information will OP1, OP2 or theme songs (Opening theme) a theme song (Opening theme) 2 ... and so on to represent. The Opening theme where some work will show the original or a screenwriter, director, production, sponsors, Opening theme singer songwriters such as messages. Some are not Pianwei Qu's works, add the script, Sheng You, or actor, etc. (such as ONE PIECE Opening theme is therefore the same as long as 2 minutes 30 seconds). These are just common practice, according to work will be different circumstances, an Opening theme often present in 13 to 26 sets (one quarter to two quarters of copies), ultra-long fan, then there is likely to continue for one year.

In addition, some television companies in the broadcast television or animation outsourcing will be the cut when the film, or not broadcast, but also to other songs