Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:D
['AD (3FED']  
X:1
L:1/8
M:4/4
K:D
 dB | AFAd B2 dB | AD (3FED AD (3FED | AFAd BABc | defg fddB | AFAd B2 dB | AD (3FED AD (3FED | 
 AFAd BABc | defg fdde ||  