Craft a musical work adhering to the specified theme and structure.
X:1
L:1/8
Q:1/2=80
M:4/4
K:D
['adfd adfd', 'AdFd Adfd AdFd'  
X:1
L:1/8
Q:1/2=80
M:4/4
K:D
 f/g/ | adfd adfd | ad fg/a/ be ef/g/ | adfd adfd | gbag fdd :: d | AdFd Adfd | AdFd eEEd | 
 AdFd Acfa | gbag fddd | AdFd Adfd | AdFd eEEg/a/ | bgaf gefd | gbag fd d2 :|  