Question: What is the acronym of the stage name for the singer of Sofi Needs a Ladder?

Context paragraphs:
Sofi Needs a Ladder: "Sofi Needs a Ladder" is the third single taken from deadmau5's album, "4×4=12".  The song features vocals from Sofia Toufa, aka Sofi.

Sofia Toufa: Sofia Toufa (born August 13, 1983), known by her stage name SOFI (acronym for Some Other Female Interest), is a Greek-German singer and rapper.  In addition to her solo career, SOFI has provided vocals on tracks by electronic music artists including deadmau5, Moguai and Savoy.

100 Kila: Yavor Yanakiev (Bulgarian: Явор Янакиев , born 16 May 1985) better known by his stage name 100 Kila (stylized also as 100KILA)(Bulgarian: 100 Кила ), is a Bulgarian rapper, actor, songwriter and entrepreneur from Varna, Bulgaria.  His stage name is an acronym of the word 100 kilograms in Bulgarian.

Mordechai Ben David: Mordechai Werdyger (born April 16, 1951) is an American Hasidic Jewish singer and songwriter popular in the Orthodox Jewish community.  As the son of famous Cantor David Werdyger he is known by his stage name Mordechai Ben David (Hebrew: מרדכי בן דוד‎ , lit.  Mordechai, son of David) or its acronym MBD.  He is known as the "King of Jewish Music" and has released over 30 albums while performing worldwide.  He has headlined the popular "HASC" and "Ohel" charity concerts for almost two decades.

BoA concert tours: This is a list of BoA Concert Tours by Kwon Boa (Korean: 권보아, Chinese: 權珤雅, Japanese: クォン·ボア, born November 5, 1986), commonly stylized and known by her stage name BoA, which is an acronym for Beat of Angel.  She is a South Korean singer and actress active in South Korea, Japan, and the United States, who referred to as the Queen of Korean Pop.

Hospital, patients, health, territories: Hospital, patients, health, territories is the official name of a French bill presented on 22 October 2008 by Roselyne Bachelot, minister of Health, Youth, Sports and Associative Life.  The bill is commonly called bill HPST (acronym of the French phrase) or bill Bachelot.  The bill is the first stage of the Hospital 2012 Plan, launched by French President Nicolas Sarkozy, which aims at revamping of the French health care system.  The bill aims at guarantee a better and equal access to care for all French people, whatever their geographic location.  This reform needs a complete overhaul of the hospitals organization, which caused strong protests among the staffs.

List of music considered the worst: The list of music considered the worst consists of albums or songs that have been considered the worst music ever made by various combinations of music critics, television broadcasters (such as MTV), radio stations, composers, and public polls.  A piece of music needs to have been notable, popular, or memorable to be deemed the "worst ever", or it would be unlikely to top all-time public polls a few years after it was released.  As such, a piece usually needs to have had a high-profile at the time of its release, such as an unexpected hit that was highly disliked outside of its fanbase.  Scholarly accounts of the "worst music ever" are rare.  Most polls or critical lists are light-hearted in nature, especially in pop music.  Magazines reflect the preferences of their readers, and if polls are influenced by too small a group of readers or critics, they provide unreliable results.  Most "worst ever" lists do not aim to take into account all music ever created, but are limited to certain time periods, styles of music, and geographical areas.  Furthermore, individual tastes can vary widely, to the point where very little consensus on a worst song can be achieved; the winning song in a CNN e-mail poll received less than 5 percent of the total votes cast.  There are a handful of scholars who have done more in-depth analysis of music perceived to be bad, including Irwin Chusid, Barry Hansen (better known by the stage name Dr. Demento) and Darryl W. Bullock, author of the 2013 book "The World's Worst Records".

MAX (band): MAX (pronounced "Max") is a Japanese female vocal group.  The name is an acronym for "Musical Active eXperience".  The original members of MAX made their musical debut as members of the Super Monkey's along with lead vocalist Namie Amuro.  They branched out on their own in 1995, becoming stars in their own right with selling several million albums and a string of consecutive top 20 singles from 1996 to 2000.  Their lead singer, Mina, left the group in 2002 due to pregnancy and was replaced by Aki Maeda who assumed the stage name Aki.  Aki left the group in August 2008 to pursue a solo career.  Original member Mina returned to the group on October 28, 2008 ushering in the group's comeback after a two-year hiatus.

Zaza Korinteli: Zaza Korinteli (Georgian: ზაზა კორინთელი ) better known by his stage name Zumba (born December 29, 1973) is a Georgian rock musician, folklorist and civic activist.  His music fuses a wide variety of genres, principally Georgian folk tradition, rock, and reggae.  Being a multi-instrumentalist on guitar, bass, wind instruments, percussions, and vocals, he leads the band ZumbaLand and also collaborates within several other musical projects.  His stage name is an acronym of a Georgian phrase "zogjer ubralod moindome, bolos agisruldeba" (ზოგჯერ უბრალოდ მოინდომე ბოლოს აგისრულდება ), translated as "Just wish sometimes – it will eventually come true."

LiSA (Japanese musician, born 1987): Risa Oribe (織部 里沙 , Oribe Risa , born June 24, 1987) , better known by her stage name LiSA (an acronym of Love is Same All), is a Japanese singer, songwriter and lyricist from Seki, Gifu, signed to Aniplex under Sony Music Artists.  After aspiring to become a musician early in life, she started her musical career as the vocalist of the indie band Chucky.  Following Chucky's disbandment in 2005, LiSA moved to Tokyo in order to pursue a solo career, making her major debut in 2010 singing songs for the anime television series "Angel Beats! " as one of two vocalists for the fictional band Girls Dead Monster.  In April 2011, she made her solo debut with the release of her mini-album "Letters to U".  She performed at Animelo Summer Live in August 2010, Anime Expo in 2012, and is a regular guest at Anime Festival Asia.

Supporting paragraphs: Sofi Needs a Ladder Sofia Toufa
Answer: Some Other Female Interest