20th-century classical music describes orchestral works, chamber music, solo instrumental works (including keyboard music), electronic music, choral music, songs, operas, ballets, concertos, symphonies, and related forms, as well as fantasies, rhapsodies, fugues, passacaglias and chaconnes, variations, oratorios, cantatas, suites, improvisational and newly developed formal concepts such as variable and mobile forms, that have been written and performed since 1900.
 This era was without a dominant style and composers have created highly diverse kinds of music.
 Modernism, impressionism, post-romanticism, neoclassicism, expressionism, and, later, minimalism were all important movements.
 Atonality, serialism, "musique concrète" and electronic music were all developed during this period.
 Jazz was an important influence on many composers in this period.
Tomorrow's Modern Boxes is the second solo album by Thom Yorke of the English alternative rock band Radiohead, released on 26 September 2014.
 It was produced by Radiohead producer Nigel Godrich, with artwork by Radiohead artist Stanley Donwood.
 The album blends Yorke's vocals and piano playing with electronic beats and textures.
"True Love Waits" is a song by the English alternative rock band Radiohead.
 Its lyrics address love, ageing, and abandonment.
 Radiohead first performed "True Love Waits" in 1995, and singer Thom Yorke performed it alone on acoustic guitar or Rhodes piano numerous times in the following years.
 The band and their producer Nigel Godrich attempted to record it for their albums "OK Computer" (1997), "Kid A" (2000) and "Amnesiac" (2001), but struggled to find an arrangement that satisfied them, and it became one of their most famous unreleased songs.
 A live recording from the "Amnesiac" tour was released on "" (2001).
The English alternative rock band Radiohead have performed and/or recorded numerous songs that have not been officially released.
 Live performances of many of the songs circulate as bootlegs.
 Asked in 2013 about the status of the unreleased songs, Radiohead producer Nigel Godrich said: "Everything will surface one day... it all exists... and so [they] will eventually get there, I'm sure."
 He cited the song "Nude", released on Radiohead's 2007 album "In Rainbows" but written 12 years prior, as an example of a song that took several years to complete.
Amnesiac is the fifth studio album by the English rock band Radiohead, released on 5 June 2001 by Parlophone Records in the United Kingdom and a day later by Capitol Records in the United States.
 Recorded during the same sessions for the band's previous album "Kid A" (2000) with producer Nigel Godrich, the album incorporates similar influences of electronic music, 20th century classical music, jazz and krautrock.
 Singer Thom Yorke described it as "another take on "Kid A", a form of explanation."
 Its lyrics and artwork explore themes influenced by memory and reincarnation, with influences from ancient Greek and Egyptian mythology.
A Different Ship is the third album from Brooklyn-based indie rock band Here We Go Magic and was released by Secretly Canadian in May 2012.
 As he did on the band's first two albums ("Here We Go Magic" and "Pigeons"), Luke Temple filled the dual role of singer and songwriter.
 The band also teamed with producer Nigel Godrich (Radiohead, Pavement) for the first time.
The Eraser is the debut solo album by Thom Yorke of the English alternative rock band Radiohead, released on 10 July 2006 on the independent label XL Recordings.
 It was produced by longtime Radiohead producer Nigel Godrich.
 The album comprises electronic music Yorke recorded during Radiohead's 2004 hiatus and between their 2005 rehearsals, and makes heavy use of original samples.
"Idioteque" is a song by the English rock band Radiohead, the eighth track from their 2000 album "Kid A".
 Although (as with all other songs on the album) it was never released as a single, it has become one of the band's most popular songs, and played at nearly every concert since 2000.
 The song is listed at #8 on Pitchfork Media's top 500 songs of the 2000s, and ranked #56 on Rolling Stone's "100 Best Songs of the 2000s".
"Daydreaming" is a song by the English rock band Radiohead and produced by Radiohead's longtime producer Nigel Godrich.
 It is a piano ballad with ambient, electronic and orchestral elements, including strings arranged by Radiohead guitarist Jonny Greenwood.
 Radiohead released it as download on 6 May 2016 as the second single from their ninth studio album "A Moon Shaped Pool", accompanied by a music video directed by Paul Thomas Anderson.
Kid A is the fourth studio album by the English rock band Radiohead, released on 2 October 2000 by Parlophone.
 On the verge of a breakdown after promoting Radiohead's 1997 album "OK Computer", songwriter Thom Yorke envisioned a radical change in direction.
 Radiohead replaced their rock sound with synthesisers, drum machines, the ondes Martenot, string orchestras and brass instruments.
 They incorporated influences from genres such as electronic music, krautrock, jazz, and 20th-century classical music.
 They recorded "Kid A" with "OK Computer" producer Nigel Godrich in Paris, Copenhagen, Gloucestershire and their hometown Oxford, England.
 The sessions produced over 20 tracks, and Radiohead split the work in two albums: "Kid A" and "Amnesiac".
 The latter was released the following year.

Question: Radiohead incorporated electronic music, krautrock, jazz, and 20th-century classical music on two albums in 2000 with producer Nigel Godrich. One album was "Amnesiac" what is the other album?
Answer: Kid A