Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
Q:1/2=90
M:4/4
K:D
['', 'd2 dc BABc', 'd2 df'  
X:1
L:1/8
Q:1/2=90
M:4/4
K:D
 A |: d2 dc BABc | d2 de fafc | d2 dc BABc | dfeg fdec :| d2 df afdf | egbg ecAc | d2 df afdf | 
 edef dcBA | d2 df afdf | egbg ecAc | d2 df afge | fdec dcBA |]  