Question: "Frühlingsstimmen" was written by a composer known by what nickname?

Context articles: Gabriel o Pensador
Johannes Sticheler
Peter Reynolds (composer)
Nellee Hooper
Johann Strauss II
Frühlingsstimmen
Bob Becker (composer)
Haldane Stewart
Mily Balakirev
John Welsman

Gabriel Contino, better known as Gabriel o Pensador (Portuguese for "Gabriel the Thinker") is a Brazilian rapper, writer, and composer known for his intellectual lyrics which speak of activism, and issues of race, politics, social problems, and the Catholic church.
 Gabriel began his music career when he launched a demo tape containing the song "Tô Feliz (Matei o Presidente)" I'm Happy (I killed the President) landing him a contract with Sony Music.
 Since then he has released eight albums: "Ainda É Só o Começo", "Quebra-Cabeça", "Nádegas a Declarar", "Gabriel o Pensador", "Seja Você Mesmo (mas não Seja sempre o Mesmo)", "MTV ao Vivo", "Cavaleiro Andante" and "Sem Crise" (this last one was released independently).
 Gabriel has also written three books: "Diário Noturno", "Um Garoto Chamado Rorbeto" and "Meu Pequeno Rubro-Negro".
 "Um Garoto Chamado Rorbeto" won the "Prêmio Jabuti", for best Children's literature.
Johannes Sticheler or Johannes Stickels is a 15th-century composer known primarily from his "Missa se j'avoye porpoin de veleur" in Vienna, Nationalbibliothek, MS 1 1883.
 He is possibly the same composer Jonnes Estiche known for an Ave Maris Stella and a motet or mass section "Et incarnatus est".
Peter Reynolds (January 12, 1958 – October 11, 2016) was a Welsh composer known for founding PM Music Ensemble.
 In addition, he was recognised by Guinness World Records as having written with writer Simon Rees the shortest opera on Earth, "Sands of Time"; a three-minute and thirty-four second long piece.
 He died on 11 October 2016 at his home in Cardiff.
Nellee Hooper (born 15 March 1963) is a British producer/remixer/composer known for his work with many major recording artists beginning in the late 1980s.
 He also debuted as a motion picture music composer with famed Scottish composer Craig Armstrong and Marius De Vries for the soundtrack for Baz Luhrmann's "Romeo + Juliet" in 1996.
Johann Strauss II (October 25, 1825 – June 3, 1899), also known as Johann Strauss Jr., the Younger, the Son (German: "Sohn" ), Johann Baptist Strauss, was an Austrian composer of light music, particularly dance music and operettas.
 He composed over 500 waltzes, polkas, quadrilles, and other types of dance music, as well as several operettas and a ballet.
 In his lifetime, he was known as "The Waltz King", and was largely then responsible for the popularity of the waltz in Vienna during the 19th century.
"Frühlingsstimmen ", Op.
 410 ("Spring's Voices," or commonly "Voices of Spring") is an orchestral waltz, with optional solo soprano voice, written in 1882 by Johann Strauss II.
Bob Becker (born June 22, 1947) is an American percussionist and composer known primarily as a founding member of the Nexus percussion ensemble, as well as a performer in the Steve Reich and Musicians ensemble.
 He primarily performs as a keyboard percussionist, but is also skilled in tabla and concert snare drumming.
 As a composer, Becker employs a multicultural approach by mixing the style of western military drumming with North Indian Hindustani idioms, such as raga scale patterns and tabla drumming.
 This fusion of compositional practices is the main focus of works like "Lahara" and "Mudra".
 There are also traces of influence from the music of minimalists like Steve Reich, which can be attributed to Becker's experience with that composer's music.
Haldane Campbell Stewart (1868–1942) was an English musician, composer and cricketer.
 He was organist and choirmaster of Magdalen College, Oxford, and a composer known for his liturgical music.
 Stewart played as a batsman for the Kent County Cricket team.
Mily Alexeyevich Balakirev (Russian: Ми́лий Алексе́евич Бала́кирев , ] ; 2 January 1837  – 29 May [O.S. 16 May] 1910 ) was a Russian pianist, conductor and composer known today primarily for his work promoting musical nationalism and his encouragement of more famous Russian composers, notably Pyotr Ilyich Tchaikovsky.
 He began his career as a pivotal figure, extending the fusion of traditional folk music and experimental classical music practices begun by composer Mikhail Glinka.
 In the process, Balakirev developed musical patterns that could express overt nationalistic feeling.
 After a nervous breakdown and consequential sabbatical, he returned to classical music but did not wield the same level of influence as before.
John Welsman (born 1955, Toronto) is a Canadian composer known for his work in film and television.
 He is best known for his film and television scores which he has written for production companies in both Canada and the United States.
 Some of the films he has worked on are "The Peace Tree", "A Winter Tale", and "Nurse.Fighter.Boy".
 He has been nominated for the Gemini Award 10 times, winning four times for his work on the television series "Road to Avonlea", and once for the short film 'The Bellringer'.
 The grandson of conductor Frank Welsman and the brother of jazz singer Carol Welsman, he studied music composition with Samuel Dolin and Milan Kymlicka.