I don’t do end-of-year rundowns. But if I did, then this single, released in January 2021, would have featured very high up:-
mp3: Mogwai – Ritchie Sacramento
I’ve admitted before that the music of Mogwai often goes right over my head. My taste tends to edge towards the songs with lyrics rather than the noisy and occasionally difficult post-rock instrumental efforts. Ritchie Sacramento was the second single given a release in advance of As The Love Continues, an album which delivered the first #1 hit for the band some 25 years after forming.
As is increasingly the case, the singles were only given a digital release, and the mp3 comes courtesy of the album.
Later in the year, Mogwai, via bandcamp, released this immense effort:-
mp3: Mogwai – Ritchie Sacramento (The Other Two Remix)
Yup. It’s Steven and Gillian to the fore. Lots of wee bits of New Order popping up throughout.
THE NEW VINYL VILLAIN 
Ritchie Sacramento is brilliant (obviously) and alongside the 2 other recent Mogwai songs with vocals (Party In The Dark and We’re Not Done) are as good as anything else in that area in recent times. Don’t think I even knew there was an Other Two remix so ta very much.
Certainly one of the stand out tracks for 2021.