Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
Q:1/2=75
M:2/2
K:Dmin
['e2 A2', 'F2 A2']  
X:1
L:1/8
Q:1/2=75
M:2/2
K:Dmin
 a4 g4 | f2 gf e2 A2 | defg e2 A2 | defg e2 A2 | a2 ba g2 ag | f2 gf e2 A2 | defg e2 ^c2 | d8 |: 
 F2 A2 F2 A2 | F2 A2 F2 A2 | A2 GA F2 A2 | A2 GA F2 A2 | FGAG FGAG | FGAG FGAf | e2 d2 e2 ^c2 | 
 d8 ||  