Problem: Nightwish is a symphonic metal band from Kitee, Finland. The band was formed in 1996 by lead songwriter and keyboardist Tuomas Holopainen, guitarist Emppu Vuorinen, and former lead singer Tarja Turunen. The band soon picked up drummer Jukka Nevalainen, and then bassist Sami Vanska after the release of their debut album, Angels Fall First (1997). In 2001, Vanska was replaced by Marco Hietala, who also took over the male vocalist role previously filled by Holopainen or guest singers.

Earlier Nightwish performs symphonic metal with soaring female operatic vocals. Their music has been described as "bombastic heavy, symphonic and cinematic, with keyboards and strings creating a gothic atmosphere". They have also been known to play power metal and gothic metal. The band's music is also known to be complex and layered. Their approach is epic, theatrical and operatic. Critic Chad Bowar notes that the music is "always very melodic with memorable choruses and a lot of hooks." The usage of a female vocalist has become a sort of trademark, though less so since the outbreak of new female fronted metal bands in the mid-2000s with the popularization of bands such as Evanescence and Leaves' Eyes as well as several gothic metal bands mixing female and male vocals, such as Lacuna Coil, Tristania, Epica and the early Within Temptation. Bassist and vocalist Marco Hietala describes the style of the band's music as "melodic symphonic metal;" though this is not a view shared by all members of the group, including band composer Tuomas Holopainen, who describes the band as simply symphonic metal. Some critics find that the band had a gothic sound since their debut. The music of Nightwish had been "distinguished by the operatic voice" of soprano Tarja Turunen, a "charismatic frontwoman with a powerful voice". Critics observed that her vocals became less operatic with the release of Once. Following the departure of Tarja Turunen from the group, Nightwish left behind the "signature operatic vocals" of their earlier albums. While the music of Nightwish is centered around a female lead singer, the band has also featured some male vocals on their albums ever since their debut release Angels Fall First. This debut album also included "elements of folk music and ambience" that were discarded on their subsequent album Oceanborn. However, the song "Creek Mary's Blood" from the album "Once" featured some use of folk-oriented Native American melodies, and their 2007 release Dark Passion Play featured folk music elements on the songs "The Islander" and "Last of the Wilds".

What bands have they been compared to?

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Problem: Arabs (; Arabic: 'arab ISO 233 'arab, Arabic pronunciation ['?arab] ( listen)) are a population inhabiting the Arab world. They primarily live in the Arab states in Western Asia, North Africa, the Horn of Africa and western Indian Ocean islands.

The earliest documented use of the word "Arab" to refer to a people appears in the Kurkh Monoliths, an Akkadian language record of the ninth century BCE Assyrian conquest of Aram, which referred to Bedouins of the Arabian Peninsula under King Gindibu, who fought as part of a coalition opposed to Assyria. Listed among the booty captured by the army of king Shalmaneser III of Assyria in the Battle of Qarqar are 1000 camels of "Gi-in-di-bu'u the ar-ba-a-a" or "[the man] Gindibu belonging to the Arab (ar-ba-a-a being an adjectival nisba of the noun 'arab). The related word 'a'rab is still used to refer to Bedouins today, in contrast to 'arab which refers to Arabs in general. The oldest surviving indication of an Arab national identity is an inscription made in an archaic form of Arabic in 328 using the Nabataean alphabet, which refers to Imru' al-Qays ibn 'Amr as "King of all the Arabs". Herodotus refers to the Arabs in the Sinai, southern Palestine, and the frankincense region (Southern Arabia). Other ancient Greek historians like Agatharchides, Diodorus Siculus and Strabo mention Arabs living in Mesopotamia (along the Euphrates), in Egypt (the Sinai and the Red Sea), southern Jordan (the Nabataeans), the Syrian steppe and in eastern Arabia (the people of Gerrha). Inscriptions dating to the 6th century BCE in Yemen include the term "Arab". The most popular Arab account holds that the word "Arab" came from an eponymous father called Ya'rub who was supposedly the first to speak Arabic. Abu Muhammad al-Hasan al-Hamdani had another view; he states that Arabs were called Gharab ("West") by Mesopotamians because Bedouins originally resided to the west of Mesopotamia; the term was then corrupted into "Arab". Yet another view is held by al-Masudi that the word "Arabs" was initially applied to the Ishmaelites of the "Arabah" valley. In Biblical etymology, "Arab" (in Hebrew Arvi ) comes both from the desert origin of the Bedouins it originally described (Arava means wilderness). The root '-r-b has several additional meanings in Semitic languages--including "west/sunset," "desert," "mingle," "mixed," "merchant," and "raven"--and are "comprehensible" with all of these having varying degrees of relevance to the emergence of the name. It is also possible that some forms were metathetical from '-B-R "moving around" (Arabic '-B-R "traverse"), and hence, it is alleged, "nomadic."

What was unique about the etymology of Arabs ?

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The related word 'a'rab is still used to refer to Bedouins today,