To start learning Lart À Tatouille - Oh Pétard chords, delve into these chords sequence to get the song's feel: G, C, G, F and C. For a smooth transition, initiate your practice at 50 BPM and gradually match the song's pace of 100 BPM. With G Major as the song's key, tweak the capo to cater to your vocal pitch and chord likes.