Where did the song "Yume ni Katachi wa nai keredo" come from in One Piece? The song 夢に形はないけれど ("Yume ni Katachi wa nai keredo") is one of my favorite songs in One Piece, but I haven't heard or seen the song in my copy of One Piece (I legally downloaded One Piece in Chinese subtitles and all they do is add subtitles and change nothing else), it's not there.

Is there a reason why it's not there or is it just not in the show to begin with?
Unfortunately, the song is not an official One Piece song.

It's a parody song of 歌に形はないけれど (Uta ni Katachi wa Nai keredo) by doriko (Vocaloid producer) with its lyric changed.

The original song: NicoNicoDouga (posted in 2008, the official video posted by doriko himself)

The parody song: NicoNicoDouga (first posted in 2010, the original/oldest video with Hatsune Miku as the vocal)