Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:2/4
K:D
['FA AF AB de', 'ge f2 fe dB BA Af fA'  
X:1
L:1/8
M:2/4
K:D
|: FA AF | AB de | f2 fe | dB BA | FA AF | AB de | fa fe |1 d2 dA :|2 d2 de |: f2 fd | g2 ge | 
 f2 fe | dB BA | Af fA | Ag g2 | ag fe |1 d2 de :|2 d2 dA ||  