To learn Helena Vondráčková, Petr Muk - Stin Katedral chords, these are the chords to practise in sequence: D, E, F#, B, E, D, E, A, F#, B, E and B. I suggest starting at a calm pace of 65 BPM, and as you gain confidence, approach the song's BPM of 130. Adapt the capo setting considering your vocal range, with reference to the key: B Major.