Epsilon (Blood Stain Child album)

{{Infobox album

| name = Epsilon

| type = studio

| artist = Blood Stain Child

| cover = Bsc_epsilon.png

| alt =

| released = June 15, 2011

| recorded =

| venue =

| studio =

| genre = {{hlist|Melodic death metal|electro-industrial|dance metal}}

| length = 45:06 (Europe)
49:20 (Japan)

| label = Pony Canyon, Coroner Records, Razzia

| producer = Blood Stain Child, Ettore Rigotti

| prev_title = Mozaiq

| prev_year = 2007

| next_title = THE LEGEND

| next_year = 2018

}}

Epsilon (stylized as εpsilon) is Blood Stain Child's fifth studio album and first release on Coroner Records/Pony Canyon. It's also the first and only album to feature vocalist Sophia and drummer Gami (after the departure of vocalist Sadew and drummer/founding-member Violator). All compositions—except "Electricity," which is composed by Aki—are by Ryu, while lyrics are co-written by Sophia.{{Cite web |url=http://hp.ponycanyon.co.jp/pchp/cgi-bin/PCHPM.pl?TRGID=PCHP_SKH_1010&CMD=DSP&DSP_SKHBNG=201100000399&DSP_SKHKETSEQ=001 |title=ポニーキャニオン - ε(イプシロン)：BLOOD STAIN CHILD: |access-date=2011-05-27 |archive-url=https://web.archive.org/web/20120610160901/http://hp.ponycanyon.co.jp/pchp/cgi-bin/PCHPM.pl?TRGID=PCHP_SKH_1010&CMD=DSP&DSP_SKHBNG=201100000399&DSP_SKHKETSEQ=001 |archive-date=2012-06-10 |url-status=dead }} This album was pre-sold during A-Kon from June 10 to 12, 2011.[https://www.myspace.com/bloodstainchildmusic/blog/542783485 BLOOD STAIN CHILD | blog on Myspace] And, in this event, nine of the new songs (including the European bonus track, "Royal Sky") were performed.[http://yaplog.jp/ryuword/archive/3690 アメリカレポ3-モノクローム黙示録:] As of June 7, 2011, Pony Canyon released forty-four second samples of each song in the album; a full sample of "Sirius VI" debuted, through Internet radio, on May 26, 2011.[https://www.facebook.com/notes/shion-babelradio/crusaders-of-visual-rock-play-list-thank-you-so-much-for-tuning-in/194253220621339 Crusaders of Visual Rock Play List: Thank you so much for tuning in!]