Some context: 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".
Are there any other interesting aspects about this article?
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
Some context: Garland was born Frances Ethel Gumm on June 10, 1922, in Grand Rapids, Minnesota. She was the youngest child of Ethel Marion (nee Milne) and Francis Avent "Frank" Gumm. Her parents were vaudevillians who settled in Grand Rapids to run a movie theater that featured vaudeville acts. She was of Irish, English, and Scottish ancestry, named after both of her parents and baptized at a local Episcopal church. "
In 1938, she was cast in her most memorable role, as the young Dorothy Gale in The Wizard of Oz (1939), a film based on the 1900 children's book by L. Frank Baum. In this film, she sang the song with which she would be identified, "Over the Rainbow". Although producers Arthur Freed and Mervyn LeRoy had wanted her from the start, studio chief Mayer first tried to borrow Shirley Temple from 20th Century Fox, but they declined. Deanna Durbin was then asked, but was unavailable, resulting in Garland being cast.  Garland was initially outfitted in a blonde wig for the part, but Freed and LeRoy decided against it shortly into filming. Her blue gingham dress was chosen for its blurring effect on her figure, which made her look younger. Shooting commenced on October 13, 1938, and was completed on March 16, 1939, with a final cost of more than US$2 million. With the conclusion of filming, MGM kept Garland busy with promotional tours and the shooting of Babes in Arms, directed by Busby Berkeley. Rooney and she were sent on a cross-country promotional tour, culminating in the August 17 New York City premiere at the Capitol Theater, which included a five-show-a-day appearance schedule for the two stars. Garland was forced into a strict diet during filming; she was given tobacco to suppress her appetite.  The Wizard of Oz was a tremendous critical success, though its high budget and promotions costs of an estimated $4 million (equivalent to $70.4 million in 2018), coupled with the lower revenue generated by discounted children's tickets, meant that the film did not make a profit until it was rereleased in the 1940s and in subsequent rereleases. At the 1939 Academy Awards ceremony, Garland received her only Academy Award, a Juvenile Award for her performances in 1939, including The Wizard of Oz and Babes in Arms. Following this recognition, she became one of MGM's most bankable stars.
What was The  Wizard of Oz based on ?
A:
a film based on the 1900 children's book by L. Frank Baum.