【Original】
業火マントル (Hellfire Mantle) / Stage 6 Theme
霊知の太陽信仰 ~ Nuclear Fusion (Solar Sect of Mystic Wisdom ~ Nuclear Fusion) / Reiuji Utsuho theme
【Game】
東方地霊殿 ~ Subterranean Animism (Touhou Chireiden ~ Subterranean Animism)
【Credits】
Arrangement: Suzuori / Vocals: Merami, Teto / Lyrics: Suzuori, Teto
Doujin Circle: Foreground Eclipse / http://www.fg-eclipse.net/
Album: Tears Will Become Melodies Tonight / 2010-12-30 (Comiket 79)
English Translation: Kafka-fuura / http://kafkafuura.wordpress.com/
Illustration: ついじ@Pixiv
Yes this was in fact one of the songs used the in Reimu vs Utsuho Dog Fight video.
There are also two different versions of this song; one with screamo and one without.
Home » プレイリスト » Youtube » 【東方ボーカル】Flames Within These Black Feathers - Foreground Eclipse 【Subbed】