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SOJ Mega Man X · The Music
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Who wrote the music for Mega Man X?

Who wrote the music for Mega Man X?
Mostly one composer. Setsuo Yamamoto wrote the vast majority of Mega Man X's score alone, until the schedule beat him and four colleagues each took a track or two.

The credits name Capcom's Alph Lyla group and five composers, which hides the actual shape of the work. Setsuo Yamamoto (credited as Setsuo) was initially the sole composer assigned to Mega Man X and contributed the vast majority of the soundtrack. The other four names appear because, late in production, help was brought in to finish: each of them wrote one track, except Makoto Tomozawa, who wrote two.

THE TRACK BY TRACK RECORD

Who wrote what
Setsuo Yamamoto
The vast majority of the score, including the title, the opening highway stage, and the Zero theme Yamamoto himself singled out in his Rockman X Sound Box liner notes as a favorite, short as it is.
Yuki Iwai · Chill Penguin
Credited as Sato. Iwai's single rescue track led directly to the lead job: she composed Mega Man X2's score the following year.
Toshihiko Horiyama · Password Screen
Credited as Kirry. The smallest assignment on this list grew the same way: Horiyama went on to compose Mega Man X4.
Takehara and Tomozawa
Yuko Takehara (credited as Yuko) wrote Boomer Kuwanger. Makoto Tomozawa (credited as Tomozou) wrote two, Storm Eagle and Spark Mandrill, the largest of the rescue contributions.

THE AFTERLIFE OF THE SCORE

Arranged, boxed, and inherited

The music left the cartridge quickly. The Japanese division of Sony Records published an arranged album of ten tracks on March 9, 1994, months after the Japanese launch. The original SNES instrumentals were collected on the Capcom Music Generation: Rockman X1 to X6 set from Suleputer in 2003, and Yamamoto returned to the material again for the Rockman X Sound Box liner notes, where his favorite character answer was Zero and his affection for that character's brief theme is recorded in his own words.

The rescue pattern also set the series' musical succession. The X sound stayed inside a small circle: Yamamoto's one track helpers became the next leads (Iwai for X2, Horiyama for X4), freelancer Kinuyo Yamashita scored X3, and Ippo Yamada, who assisted on X2's sound production, later composed the entire Mega Man Zero series' defining scores, deliberately treating them more like television or film than stage music.

The History of Mega Man XThe Gallery
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THE FIRST WORD

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