Let's start jamming Avantasia - Sign Of The Cross chords, Practice these chords sequence - Gb, Eb, Ebm, B, Gb, B, Db and Gb. To master the tempo, it's wise to start at 50 BPM before aiming for the song's 101 BPM. For a balanced pitch, adjust the capo with respect to your voice and the song's key: B Major.