
If you take a look at the first two measures for example, we can notice we are playing a A chord. However, it will be difficult to play these chords with your index finger covering the strings. The chords are quite basics, here is the list :

You’ll quickly notice that, even if you’ve been playing for a long time, this song make your left hand sore. There are two main difficulties : the adds on the high E string (on the E chord for example, you’ll have to add a Ab on the fourth fret), and the length of the song. The chords used in this song are pretty simple but there are a few subtleties you’ll have to be aware of. I used repeat bars to make it easier to read befor the outro. However, you can notice there is a small repetition at the end of the tab when the singing part leads the chord changes. But, what is really pleasant in this song, is that you can easily play it changing the chords leaving the song live its own life according to your inspiration. To cover this song, it was pretty hard for me to memorise each of these changes, I therefore cheated writing on a sheet of paper the chords in the right order (and yet I made a mistake in the middle of the song anyway!).

Most of the time, Thom Yorke goes from one chord to another without any logic (especially when there is no singing). We are not talking of a real improvisation (each arpeggio is nearly always played the same way) but the structure isn’t really clearly defined.

If you listen to the song carefully, you might hear the bass player trying to follow Thom, but he quickly gives up because he can’t figure out what’s coming next. Thom Yorke himself explains he has trouble playing this song twice the same way on the piano. I think we can call this structure a chaotic structure! It’s a little bit excessive I know but you will quickly understand why I say that.
