Question: Blood Ritual was released by which band formed in Sion, Switzerland?

Context paragraphs:
X-Sinner: X-Sinner is an American hard rock band formed in 1988 by guitarist Greg Bishop.  The band is known for having a very similar sound to that of AC/DC, Kix and Def Leppard and has continued performing and releasing albums today.  Originating in the White Metal scene, the band has expanded their fan base into mainstream metal over the years with great success.  They were named the favorite new band of 1989 by the readers of "HM Magazine", and their debut album "Get It" was one of the most talked about albums within the white metal scene at the time.  Their first two albums were produced by John Elefante formerly of the band Kansas and released on Pakaderm Records, as well as on the mainstream A&M Records label of Hollywood.  They have released five full-length albums including the latest album "A World Covered In Blood" now on Image Records.  Experiencing a resurgence of interest with the release of "World Covered In Blood" in 2009/10, the band has gone on to perform in Europe recently as well as concerts in the U.S. and Canada.  The band has opened for many mainstream metal artists like Warrant and Paul Dianno as well as headlining and performing at rock festivals and performing concerts of their own.  The band has united with members of Rex's new side project GX for their live performances recently and have added that material to their live set list.  X-Sinner's album, "Going Out With a Bang", will be released track by track starting in 2014.

Chris Robinson Brotherhood: Chris Robinson Brotherhood is an American blues rock band formed in 2011 by Black Crowes singer Chris Robinson while The Black Crowes were on hiatus.  The band has released four studio albums: "Big Moon Ritual", "The Magic Door", "Phosphorescent Harvest", and "Any Way You Love, We Know How You Feel".  The band consists of Robinson, guitarist Neal Casal, keyboardist Adam MacDougall, bassist Jeff Hill (who replaced original bassist Mark Dutton in 2016), and drummer Tony Leone (who replaced original drummer George Sluppick in January 2015).

Type V Blood: Type V Blood is a Russian Industrial/EBM band from Kaliningrad.  Band formed in 1999 and recorded two albums.  But after that Type V Blood was disbanded.  In 2008 band was reformed and continued to move forward.  September, 8th of 2015 band released their new EP called Seven Scars through independent belarusian music label Venator Music.

Blood Stain Child: Blood Stain Child (stylised as BLOOD STAIN CHILD) is a Japanese metal band from the city of Osaka.  The band's musical style combines melodic death metal with electro-industrial and trance.  The band formed under the name "Visionquest" in 1999, but reformed under the name Blood Stain Child in 2000.

Def FX: Def FX were an Australian band formed in 1990 by Martyn Basha on bass guitar, Fiona Horne on lead vocals and Sean Lowry on synthesisers, sequencers and samples.  They released four albums, "Light Speed Collision" (December 1992), "Baptism" (compilation, November 1993), "Ritual Eternal" (May 1995), "Majick" (July 1996) before disbanding in April 1997.  For United States releases and touring they used Definition FX as their band name to avoid confusion with similarly named groups.

Alastis: Alastis was a Swiss gothic black metal band formed in 1987 in Sion, Valais.

Blood Ritual (album): Blood Ritual is the second album by the Swiss heavy metal band Samael, released in 1992 on the Century Media Records label.

Hate Forest: Hate Forest was a Ukrainian black metal band formed by Roman Saenko, the leading member of Drudkh, Dark Ages, and Blood of Kingu.  Thurios joined the band in 1998 after the recording of "Scythia".  The music is mostly very fast, but occasionally slow, with low, distorted vocals and dark ambient elements (some releases have consisted entirely of dark ambient tracks) and musical influences range from Scandinavian black metal to traditional death metal.  According to the band, its lyrics are about mythology, mainly Slavic, and inspired by H. P. Lovecraft's stories and Friedrich Nietzsche's philosophy.  The band never gave interviews, never released photos, and held its distance from the black metal scene.  After Hate Forest disbanded, Saenko focused on Blood of Kingu, a band similar in style but of different inspiration but in 2016, it had also ended.

Samael (band): Samael is a Swiss symphonic black/industrial metal band formed in 1987 in Sion, Switzerland.

Ancient Rites: Ancient Rites is a Belgian black metal band formed in 1988.  Initially, the lineup consisted of guitar players Johan and Phillip, drummer Stefan, and Gunther Theys on bass and vocals.  In 1990 the "Dark Ritual" demo was released in the underground scene, getting worldwide attention just as black metal was gaining importance in the metal scene.  Soon after the release of this demo Phillip died in a car crash and not long after, Stefan committed suicide.  However painful this episode was to the band, they decided to continue and Stefan's position was taken by his drum roadie Walter Van Cortenberg.

Supporting paragraphs: Blood Ritual (album) Samael (band)
Answer: Samael