In episode 150 of One Piece, there's a song playing on the prologue scene. This song was even in some prologues of Alabasta saga.
I've already listened to all soundtracks, but I couldn't find this song.
What is that song?
The song that was played as intro in the episode 150 of One Piece was titled Hikari e.
Romaji: Hikari e
Meaning: Towards the Light
English: Towards the Light
Artist(s): The Babystars Album/Single: Hikari e
Label: Ki/oon Records
Track Length: 3:44
Intro length: 1:49
Anime Use: 3rd Opening: Episodes 116 - 168 (53 episodes)
More details about the song can be found on Wikia.
It was Hikari e
This was the opening song between episodes 115 and 168