Here is the full guide to get the Astraeus Serenade Rod in Fisch, including the ways to get all the required materials.
Soft copper wire: 22 gauge (wire diameter 0.6mm): 3 pieces 7cm (about 3 inch), 2.5cm (1 inch) 28 gauge (wire diameter 0.3mm): 20cm (8 inch) Spherical stone with a diameter of 6mm This video is re-edit ...
Materials I used : Soft copper wire : 20 gauge ( wire diameter 0.8mm ) : 10cm( 4 inch), 20cm( 8 inch) crystal 4mm diameter A ...