Question: What is the ethnic origin of the vocalist on "Sofi Needs a Ladder"?

Context paragraphs:
Sabinus (cognomen): Sabinus is an ancient Roman "cognomen" originally meaning "Sabine"; that is, it indicated origin among the Sabines, an ancient people of Latium.  It was used by a branch of the "gens Flavia", of the "gens Calvisia", and several others, and is by far the most common of the "cognomina" indicating ethnic origin that were in use during the Republican and Augustan eras.  Sabine heritage carried a positive stereotype of traditional values and trustworthiness, and since the "cognomen" may have been appropriated by some politicians for its aura of uprightness, it should not always be taken as a mark of authentic Sabine origin.

Racism in Lithuania: Racism in Lithuania appears mainly in the form of negative attitudes and actions towards people who are not considered ethnically Lithuanian, especially if the foreigner is of different race.  According to the data provided by the Centre for Ethnic Studies, Roma people, Chechens, refugees and Muslims are regarded with disfavour most of all in Lithuania.  anti-Semitist as well as anti-Polish sentiments are also very strong in Lithuania.  However, recent research showed that Lithuanians themselves claim to be tolerant.  The problem of racism, which is deep in the country, is still not widely admitted, although the Government itself has put some effort to reduce xenophobia in Lithuania.  Since the mid-2000s the Law on Equal Opportunities forbids any direct or indirect discrimination on the basis of racial or ethnic origin, gender, religion, nationality or belonging to any other group.

List of Malaysians of Indian descent: This is a list of notable Malaysians of Indian origin, including original immigrants who obtained Malaysian citizenship and their Malaysian descendants.  Entries on this list are demonstrably notable by having a linked current article or reliable sources as footnotes against the name to verify they are notable and define themselves either full or partial Indian origin, whose ethnic origin lie in India.

Azerbaijani diaspora: The Azerbaijani diaspora are the communities of Azerbaijanis living outside of places of their ethnic origin: Azerbaijan and the Iranian region of Azerbaijan.  The term Azerbaijani diaspora refers to the global community of ethnic Azerbaijanis.

English Canadians: English Canadians or Anglo-Canadians (French: "Canadiens anglais" ) refers to either Canadians of English ethnic origin and heritage, or to English-speaking, or Anglophone, Canadians of any ethnic origin; it is used primarily in contrast with French Canadians.  Canada is an officially bilingual state, with English and French official language communities.  Immigrant cultural groups ostensibly integrate into one or both of these communities, but often retaining elements of their original cultures.  The term English-speaking Canadian is sometimes used interchangeably with English Canadian.

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.

List of Malaysian politicians of Indian descent: This is a list of notable Malaysian politicians of Indian origin, including original immigrants who obtained Malaysian citizenship and their Malaysian descendants.  Entries on this list are demonstrably notable by having a linked current article or reliable sources as footnotes against the name to verify they are notable and define themselves either full or partial Indian origin, whose ethnic origin lie in India.

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.

List of Malaysian sportspeople of Indian descent: This is a list of notable Malaysian sportspeople of Indian origin, including original immigrants who obtained Malaysian citizenship and their Malaysian descendants.  Entries on this list are demonstrably notable by having a linked current article or reliable sources as footnotes against the name to verify they are notable and define themselves either full or partial Indian origin, whose ethnic origin lie in India.

Afghan Canadians: Afghan Canadians are Canadians with ancestry from Afghanistan.  Their ethnic origin may come from any of the ethnic groups of Afghanistan.  In the Canada 2001 Census about 25,230 Canadians were from Afghanistan.  The former Minister of Foreign Affairs Bill Graham has recently said there are about 80,000 people from Afghanistan in Canada.  Due to the political borders at earlier times, some of these Afghan immigrants may have been ethnic Pashtuns from British India (present-day Pakistan) or Afghanistan.

Supporting paragraphs: Sofi Needs a Ladder Sofia Toufa
Answer: Greek-German