Radiohead · In Rainbows · song 4
Weird Fishes/Arpeggi tuning.
Weird Fishes/Arpeggi (Radiohead, 2007) is in E Standard, about 14 cents sharp (A ≈ 444), measured by TuneLit from the record.

Measured by TuneLit
14 ¢ sharp
The album's value, measured on the LP: Tune moves every string +14 ¢.
Radiohead · In Rainbows · 2007
About Weird Fishes/Arpeggi
The fourth track of In Rainbows (2007), first tried in 2005 by Thom Yorke and Jonny Greenwood with the London Sinfonietta and the Arab Orchestra of Nazareth (Wikipedia). Three guitars play interlocking arpeggios, each with its own repeating picking pattern, all in standard tuning, as Howard Wright's transcription has it. There is no capo and no altered string.
TuneLit measured the first LP of In Rainbows about 14 ¢ sharp (A ≈ 443.6), and this song about 16 ¢, so Tune sets standard tuning 14 ¢ up. But that LP's songs run 0.8 % shorter than on CD, which accounts for the whole 14 ¢: with a CD or a stream, tune to plain A 440 instead. Either way, three guitars ringing open strings make a few cents easy to hear. TuneLit's semitone check agrees with the low E.
The difficulty is staying in time, not in tune. Each part loops its own pattern, the parts enter at different points, and the song depends on them locking together, so learn one part at a time against the record before you try to hear the whole. Because the arpeggios let every string ring, a single string a few cents off stands out; tune each string carefully rather than trusting one chord.
Tip: Tune to A 440 for a CD or a stream (14 ¢ up for the LP), then check each open string against the arpeggios, one at a time.
Step by step
Tune your guitar like the record
- Tap Tune like this: the tuner switches to E Standard, every string +14 ¢, the notes Weird Fishes/Arpeggi was recorded in.
- Turn String 6 to String 1 until each shows ✓ in tune. Weird Fishes/Arpeggi sits 14 cents sharp on the record: at A 440 your guitar would sound that much flat against it, which Tune already corrects.
- Then play Weird Fishes/Arpeggi along with the record: its lowest open note and your String 6 should ring together without a wobble.
Or the other way round
Move the record into your tuning
Rather keep your guitar as it is? Let Play along move Weird Fishes/Arpeggi instead. Add your own copy, for example from your CD (it never leaves your device); the link already says the song is in E Standard +14 ¢. Choose E Standard at A 440 and Weird Fishes/Arpeggi moves down 14 cents, at its own speed. Slow it down or loop a few bars to learn it, and save the result as a WAV file.
Questions
What tuning is Weird Fishes/Arpeggi in?
E Standard +14 ¢: E A D G B E, low to high, at the pitch TuneLit measured on the record.