Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:4/4
K:Cdor
['fB B/B/B d2 cB']  
X:1
L:1/8
M:4/4
K:Cdor
 g | fB B/B/B d2 cB | GBFD ECCg | fB B/B/B d2 cB | GBFE DB,B,g | fB B/B/B d2 cB | GBFD ECCg | 
 FDFD GEGB | ABcF dBBg | fdBd F2 BF | fBdB eccg | fdBd F2 BF | fBdB GBBg | fdBd F2 BF | fBdB eccg | 
 GEGE FAFA | BfAc dBB ||  