Donna Summer - I Feel Love
Depeche Mode - Get The Balance Right!
Autechre - Arch Carrier
No I Feel Love, no Blue Monday, arguably. Sure, there were other possible influences on New Order in 1983 but they can all be traced back here, I think.
The Belleville Three have cited DM as a huge influence and you can trace that back to Get The Balance Right! So, no DM, no techno.
Whilst other tunes from Autechre's LP5 are clearer influences on tunes from Kid A (Melve - Kid A; Vose In - Idioteque), I can just tell Thom Yorke loved Arch Carrier like one of his own.