The tuning is Eb tuning. That is, starting from the 6th string, Eb Ab Db Gb Bb Eb.
There are basically two chord progressions that cover the entire song.
I have have transcribed the piano and orchestra chords for a single acoustic guitar. Tuning down one half-step makes it quite a bit easier to play on the guitar. Overall, the chords work very well on the guitar and sound great.
The are quite a few barre chords, so hopefully you have gotten those under your belt. If not, perhaps playing "The Long And Winding Road" will be a great way to practice them? 🙂
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