Develop a piece of music conforming to the stated structure and theme.
X:1
L:1/8
M:4/4
K:A
['e2 cA', 'a2 ec'  
X:1
L:1/8
M:4/4
K:A
 f | e2 cA d2 df | e2 cA dBBa | e2 cA d2 fd | edcB cA A :: g | a2 ec d2 fd | a2 ec fBBg | 
 a2 ec d2 fd | edcB cAAg | a2 ec d2 fd | a2 ec fBBg | afec defa | edcB cA A :|  