Question: What is the stage name of the lead member of the group that released Tragic Serenades?

full_context: Document 1: Michael Locher: Michael Locher (a.k.a. "Vorphalack", or simply "Vorph") (born 7 January 1969) is a Swiss musician who provides vocals and is a guitarist for Swiss industrial/black metal band Samael. He co-founded the band in 1987 with his brother Alexandre Locher (also known as "Xytras" or "Xy") on drums. Michael's musical influences include Celtic Frost, Slayer, Iron Maiden, Motörhead, Venom, Bathory, and early Possessed. Michael particularly points to Bathory as a source of inspiration for vocals:
Document 2: Only Death Is Real: Only Death Is Real: An Illustrated History of Hellhammer and Early Celtic Frost 1981–1985 is a non-fiction book written by Tom Gabriel Fischer with collaboration of Martin Eric Ain, published through Bazillion Points on March 30, 2010. The book features an introduction by Nocturno Culto of Darkthrone and a foreword by author Joel McIver.
Document 3: Tom Araya: Tomás Enrique Araya Díaz (born June 6, 1961) is a Chilean American musician, best known as the vocalist and bassist of the American thrash metal band Slayer. Araya is ranked fifty-eighth by "Hit Parader" on their list of the 100 Greatest Metal Vocalists of All Time.
Document 4: Tristesse Hivernale: Tristesse Hivernale (English: "Winter Sadnesses") is a demo by black metal Neige-led band Alcest, released in 2001 on Drakkar Productions. Unlike the following albums, this style of this demo is traditional black metal with a raw sound and harsh vocals. The music was recorded with Argoth (bass guitar) and Aegnor/Famine (lead guitar), both from Peste Noire, a band that Neige was also involved with as a session drummer at the time (session/live rhythm guitarist later). Famine wrote the main riff of the song "La Forêt de Cristal"". It was later re-released by Northern Silence Productions in August 2007 as a split release with another French black metal band, Angmar.
Document 5: Tommy Victor: Tommy Victor (born September 19, 1966) is the lead singer and guitarist for the heavy metal band Prong that he founded in New York City in 1986. In the late 1980s Victor worked as a sound engineer at the trendy venue, CBGB in New York City. After the release of "Rude Awakening" in 1996, Prong disbanded and Victor moved to Los Angeles but continued to release new Prong records. He took a break from Prong during which Victor worked alongside rock musicians including Rob Zombie, Marilyn Manson, Trent Reznor and Glenn Danzig. Since 2012's "Carved Into Stone", Prong have been very active again, releasing albums and touring relentlessly. 2013 saw the band release their "Official Bootleg -- Unleashed In The West"-album which featured re-recordings of 17 classic Prong tracks. The next studio album "Ruining Lives" was released in 2014 and 2015 sees the band release their first ever covers album entitled "Songs From The Black Hole". Victor is also currently working with Glenn Danzig on his upcoming Danzig album. He is also part of the hard rock, heavy metal, hardcore punk and punk rock supergroup Teenage Time Killers.
Document 6: Attila Csihar: Attila Csihar (] ; born 29 March 1971), also sometimes known as Void, is a Hungarian black metal vocalist, best known for his vocal work on Mayhem's "De Mysteriis Dom Sathanas" album. Author Ian Christe describes his vocals as "operatic."
Document 7: Darkthrone: Darkthrone is a Norwegian heavy metal band. It formed in 1986 as a death metal band under the name Black Death. In 1991, the band embraced a black metal style influenced by Bathory and Celtic Frost and became one of the leading bands in the Norwegian black metal scene. Their first three black metal albums—"A Blaze in the Northern Sky", "Under a Funeral Moon" and "Transilvanian Hunger" (sometimes dubbed the "Unholy Trinity") — are considered the peak of the band's career and to be among the most influential albums in the genre. For most of this time, Darkthrone has been a duo of Nocturno Culto and Fenriz, who have sought to remain outside the music mainstream. Since 2006, their work has strayed from the traditional black metal style and incorporated more elements of traditional heavy metal, speed metal and punk rock, being likened to Motörhead.
Document 8: Chuck Schuldiner: Charles Michael Schuldiner (May 13, 1967 – December 13, 2001) was an American singer, songwriter, and guitarist. He founded the pioneering band Death in 1983. Schuldiner is often referred to as "The Godfather of Death metal",
Document 9: George Fisher (musician): George "Corpsegrinder" Fisher (born July 8, 1969) is an American extreme metal vocalist for the American death metal band Cannibal Corpse, the lesser-known melodic death metal band Paths of Possession, and the lesser-known extreme metal supergroup Serpentine Dominion. He recorded two albums with Florida's Monstrosity before leaving and joining Cannibal Corpse in late 1995, replacing vocalist Chris Barnes, who is now the vocalist for Six Feet Under. He also provided guest vocals for New York technical death metal band Suffocation on the songs "Reincremation" and "Mass Obliteration" from their debut album, "Effigy of the Forgotten", as well as guest vocals for California deathcore band Suicide Silence on the song "Control" from their fourth album, "You Can't Stop Me". Fisher also performed guest vocals on Job for a Cowboy's 2014 album "Sun Eater" on the song "The Synthetic Sea." As a death metal vocalist, Fisher employs the "death growl" extended vocal technique.
Document 10: Tragic (album): Tragic is the second studio album by the American rock band Orange 9mm. Produced by Dave Sardy of Barkmarket, it was released in 1996 through Atlantic Records. It is the last album to feature the bassist David Gentile, who was replaced by Taylor McLam after the end of the recording sessions.
Document 11: De Mysteriis Dom Sathanas: De Mysteriis Dom Sathanas is the first full-length studio album by the Norwegian black metal band Mayhem. Songwriting began in 1987, but due to the suicide of vocalist Per "Dead" Ohlin and the murder of guitarist Øystein "Euronymous" Aarseth, the album's release was delayed until May 1994. "De Mysteriis Dom Sathanas" is widely considered one of the most influential black metal albums of all time.
Document 12: Tragic Serenades: Tragic Serenades is an EP by the Swiss extreme metal band Celtic Frost. It was released in 1986, and was an influence on the developing death metal and black metal genres. According to frontman Thomas Gabriel Fischer, the purpose of this EP was to include Martin Eric Ain's bass lines and improve on Horst Müller's original production of tracks from "To Mega Therion".
Document 13: Tribulation (band): Tribulation are a Swedish death metal band from Arvika that formed in 2005. In early 2009, the band released its debut studio album "The Horror". Their second full length studio album "The Formulas of Death" was released in 2013. In 2015, they released their third full length studio album "Children of the Night". Though their debut album sits firmly within the old school death metal genre, their later albums are a radical departure from this sound, drawing significantly on traditional heavy metal, psychedelic rock, gothic rock, as well as the occult and supernatural mythology.
Document 14: Thomas Gabriel Fischer: Thomas Gabriel Fischer (born 19 July 1963), also known by his stage names of Tom G. Warrior and Satanic Slaughter, is a Swiss metal musician. He is considered to be one of the pioneers of the death metal style of singing, which resembles guttural growling. He led the groups Hellhammer and Celtic Frost, and today is the frontman of the band Triptykon.
Document 15: Martin Eric Ain: Martin Eric Ain (real name Martin Stricker, born July 18, 1967 in the US) ) is best known for being the former bassist of the influential extreme metal band Celtic Frost. He used the stage name Martin Eric Ain throughout his career in Celtic Frost.
ground_truth: Tom G. Warrior