Professional ratings
Aggregate scores
Source	Rating
Metacritic	81/100
Review scores
Source	Rating
AllMusic
Entertainment.ie
Entertainment Weekly	B
The Guardian
Muzik
Pitchfork	6.6/10
Q
Rolling Stone
Uncut

Lost Horizons is the second studio album from the British electronic duo Lemon Jelly, released on 7 October 2002. Released by XL Recordings and produced by Nick Franglen, the album generated two charting singles in the UK, "Space Walk" and "Nice Weather for Ducks"; the latter has often been called the album's stand-out track. The album, which is built around a mix of organic instrumentation and idiosyncratic samples, was met with largely positive reviews by music critics, although it was somewhat critiqued due to its near-constant mellowness.

In the United Kingdom, Lost Horizons peaked at number 20 on the Official Albums Chart, whereas in the United States, it peaked at number 24 on Billboard's Top Electronic Albums component chart. The album's two singles, "Space Walk" and "Nice Weather for Ducks", were also successful, peaking on the UK Singles Chart, at number 36 and 16 respectively. The album was nominated for the Mercury Music Prize and Brit Award in 2003, and was eventually certified gold by the British Phonographic Industry for shipments exceeding 100,000 copies.

Lost Horizons opens with "Elements", which "blends acoustic guitars, flugelhorns, synths, skittering breakbeat rhythms, a folksy harmonica, and ... a falsetto 'doo-doo' chorus". Overlaying the music is a voiceover, courtesy of English actor John Standing, that lists the basic 'elements' that make up the world: ash, metal, water, wood, fire, and (eventually, later in the song) sky. The second track, "Space Walk", is set to a recording of Ed White's 1965 space walk on the Gemini 4 mission. Franglen and Deakin chose to use the sample after listening to an album called Flight to the Moon (1969); the two were struck by how moving and emotive many of the tracks were. Deakin later said, "'One small step' leaves me cold, because it was so obviously scripted. But the spacewalk… even after hearing it so many times, it's so vivid."

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