Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
M:6/8
K:G
['BAB ded BAG', 'def g3 a3 bge e2 f gag'  
X:1
L:1/8
M:6/8
K:G
|: B3 BAB | ded BAG | A2 A ABA | DFA AGE | D2 B BAB | ded BAG | AB/c/d BAB |1 FED E2 F :|2 
 FED E2 f |: g2 e eag | faf def | g3 a3 | bge e2 f | gag gfe | ded ded | g3 B3 |1 dBG GBd :|2 
 d3 G3 ||  