Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
M:4/4
K:Gmin
['GA BGDG BdcB cAFA c2 Bc dGG_G', 'd2 cBAc BGG_G'  
X:1
L:1/8
M:4/4
K:Gmin
 GA |:"Am" BGDG BdcB |"G/A" cAFA c2 Bc |"Fmaj7/A" dGG_G =GBAG |"E7" A_GD_G A4 |"Am" BGDG BdcB | 
"G/A" cAFA c2 Bc |"Fmaj7" d2 ed"E7" cBAc |"Am" BGG_G =G2 ::"Am" gdgb"G/B" agab | 
"Am/C" gdBd"Am" G4 |"G" C2 FA FABc |"E7" d_G=GA dcBA |"Am" G3 b"G/B" agab |"Am/C" gdBd"Am" GABc | 
"Fmaj7" d2 ed"E7" cBAc |"Am" BGG_G | =G8 :|  