Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
Q:1/8=150
M:2/2
K:G
['(3gfe dGBd', 'bg (3agf gBfB gBfB ed^cd'  
X:1
L:1/8
Q:1/8=150
M:2/2
K:G
 (3gfe | dGBd ed (3gfe | dBGB dBed | (3cdc Ac (3BcB GB | (3ABA (3GFE D2 (3gfe | dGBd edge | 
 dBGB dgfg | (3efg ce dafa | gfga g2 :| ga | bg (3agf gBfB | gBfB ed^cd | efga (3bag (3agf | 
 (3gfe fd efga | bg (3agf gBfB | gBfB ed^cd | (3efg ce dafa | gfga g2 :|  