Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:2/4
K:G
['d>edc BGGB cBAG FDDA BGGB cAAg fde^c', 'd2 FDFA dAAc BGBd gdd=f ecAc dBGc'  
X:1
L:1/8
M:2/4
K:G
 d>edc | BGGB | cBAG | FDDA | BGGB | cAAg | fde^c | d2 d2 :| FDFA | dAAc | BGBd | gdd=f | ecAc | 
 dBGc | B/d/B/G/ A/c/A/F/ | G2 G2 :|  