Phantasm - это выдуманная группа, которая впервые появилась в визуальной новелле Chaos;Head. Вокалисткой в этой группе является персонаж Kishimoto Ayase, под псевдонимом FES (голос персонажа: Sakakibara Yui).

Hallelujah no Fukuin / Mikkyou no Kubikazari:
01. Hallelujah no Fukuin. #Xbox360 Chaos;Head Noah ED theme
02. Mikkyou no Kubikazari.　#Xbox360 Chaos;Head Noah insert song
03. Hallelujah no Fukuin (Off Vocal). #Xbox360 Chaos;Head Noah ED theme
04. Mikkyou no Kubikazari (Off Vocal).　#Xbox360 Chaos;Head Noah insert song
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Haritsuke no Misa:
01. Haritsuke no Misa. #Anime Chaos;Head insert song
02. Harukanaru Idiyona. #Anime Chaos;Head insert song
03. Haritsuke no Misa (Off Vocal). #Anime Chaos;Head insert song
04. Harukanaru Idiyona (Off Vocal). #Anime Chaos;Head insert song
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Inori no Violette:
01. Inori no Violette. #Xbox360 Chaos;Head Love Chu Chu! ED theme
02. Innocence ~Satsuriku no Souseiki Shihen Saishuushou Yori~. #PSP Chaos;Head Noah ED theme
03. Zaika ni Keiyaku no Chi wo -Single Limited Version-. #PC Chaos;Head insert song
04. Inori no Violette (Off Vocal). #Xbox360 Chaos;Head Love Chu Chu! ED theme
05. Innocence ~Satsuriku no Souseiki Shihen Saishuushou Yori~ (Off Vocal). #PSP Chaos;Head Noah ED theme
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Preghiera no Tsukiyo ni:
01. Preghiera no Tsukiyo ni. #PSP Steins;Gate ED theme
02. Euphoria ~Tsugunai no Requiem~.
03. Preghiera no Tsukiyo ni (Off Vocal). #PSP Steins;Gate ED theme
04. Euphoria ~Tsugunai no Requiem~ (Off Vocal).
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Unmei no Farfalla:
01. Unmei no Farfalla. #Xbox360 Steins;Gate ED theme
02. Masquerade ~Noah Daisanshou Retsuou Shinseikihen Yori~. #Fictional anime Rai-net Kakeru theme song
03. Nageki no Arabesque ~Single Limited Version~.
04. Unmei no Farfalla (Off Vocal). #Xbox360 Steins;Gate ED theme
05. Masquerade ~Noah Daisanshou Retsuou Shinseikihen Yori~ (Off Vocal). #Fictional anime Rai-net Kakeru theme song
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Zaika ni Keiyaku no Chi wo:
01. Zaika ni Keiyaku no Chi wo.　#PC Chaos;Head insert song
02. Gladiole.　#PC Chaos;Head ED theme
03. Zaika ni Keiyaku no Chi wo (Off Vocal).　#PC Chaos;Head insert song
04. Gladiole (Off Vocal). #PC Chaos;Head ED theme
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~ Phantasm ~ End Prophecy:
01. Mikkyou no Kubikazari (Black Mass Version). #Xbox360 Chaos;Head Noah insert song
02. Shokuzai no Erotica.
03. Zaika ni Keiyaku no Chi wo. #PC Chaos;Head insert song
04. Yami ni Hikari wo Tomosu Mono.
05. Haritsuke no Misa (To the Distance Version). #Anime Chaos;Head insert song
06. Harukanaru Idiyona (Heavy Generation Version). #Anime Chaos;Head insert song
07. Hallelujah no Fukuin (Extra Solo Version). #Xbox360 Chaos;Head Noah ED theme
08. Gladiole. #PC Chaos;Head ED theme
09. Nageki no Arabesque.