Tri Repetae (stylised as tri repetae.) is the third studio album by English electronic music duo Autechre, released on 6 November 1995 by Warp in the United Kingdom. In contrast to the duo's previous albums, Incunabula (1993) and Amber (1994), Tri Repetae features a distinct style that incorporates more minimal rhythms and spacious melodies.

In the year leading up to the production of Tri Repetae, Booth and Brown had both been Sheffield residents, with Sean moving both house and studio next door to Jez Potter, a friend and fellow experimental producer and DJ, subsequently based in Brighton, who introduced the duo to his collaborator Mat Steel, and additionally the English experimental artist Mark Fell.^[1] Potter had been performing DJ sets across the United Kingdom at clubs with dedicated "ambient rooms", such as the London venue Megatripolis; Booth and Brown had also been appearing regularly and anonymously alongside Fell on weekly radio broadcasts by Potter on the Sheffield pirate radio station Foulmouth FM. Subsequently, Tri Repetae marked a significant change in both the duo's musical style and their approach to music production, heavily inspired by the glitch music of Potter and Fell.^[1]

In contrast to previous albums by Autechre, Incunabula (1993) and Amber (1994), Tri Repetae features a distinct style that incorporates more minimal, repetitive rhythmic patterns and intricate, spacious arrays of melodies; the aesthetical shift was intentionally echoed by its album cover designed by the duo's visual collaborators The Designers Republic, consisting of only a single shade of beige. Stemming from Autechre's increasing preoccupation with unique electronic musical textures and glitches, the liner notes of the album mention a preference to listen to the album on vinyl for surface noise; the CD version states that the album is "incomplete without surface noise", whereas the vinyl version satisfactorily states that it is "complete with surface noise".

Potter subsequently accompanied the band on much of the UK leg of the promotional tour for ‘Tri Repetae’, DJing alongside Birmingham techno DJ and producer Surgeon, mixing what were to become early Shirt Trax releases (one of his projects in collaboration with Fell) with band favourites such as Tod Dockstader and Panasonic, while Surgeon played his tough, sinewy, minimal style of techno, rounding out each show after the duo had finished debuting this new material.

In preparation for the 1997 release of the duo's fourth studio album Chiastic Slide, Tri Repetae was rereleased on 16 March 1996 by Wax Trax! Records and TVT Records in the United States as a two-disc set named Tri Repetae++, which included the Garbage and Anvil Vapre EPs constituting the second CD. In Japan, it was released with the bonus track "Medrey".^[2]. On 11 November 2016, Tri Repetae was re-released on vinyl by Warp,^[3] along with their two previous albums, Incunabula and Amber.

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Review scores
Source	Rating
AllMusic	[4]
Encyclopedia of Popular Music	[5]
Muzik	[6]
Pitchfork	9.0/10[7]
Record Collector	[8]
The Rolling Stone Album Guide	[9]
Select	4/5[10]
Spin	7/10[11]

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Tri Repetae received critical acclaim upon release. In 2017, Pitchfork ranked it at number three on its list of "The 50 Best IDM Albums of All Time".^[12]