To jam and learn the simple chords for Ambiorix - Levantate chords, practice playing G, Em, Bm, C, Am, D, G, Bm, Em, C and G in sequence. A strategic approach would be to train at 66 BPM initially, and then accelerate to the song's tempo of 133. Considering your vocal pitch and chord choices, adjust the capo in accordance with the key: G Major.