To learn Claus Hempler - Op chords, these are the chords to practise in sequence: G#, C#, G#, F#, C#, F#, A#m and C#. Kick off your practice at a gentle 37 BPM, then escalate to the song's tempo of 76 BPM. Align the capo with your vocal depth and chord choice, bearing in mind the song's original key: C# Major.