Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
Q:1/4=150
M:2/2
K:F
['D2 B,2']  
X:1
L:1/8
Q:1/4=150
M:2/2
K:F
 C2 | F3 G (AG)FE | D2 B,2 F2 FF | C2 F2 F2 A2 | G6 CC | (A,C)(FG) F2 FE | D2 B,2 F2 FF | 
 C2 F2 G2 A2 | G6 C2 | F3 G (AG)(FE) | D2 B,2 B,2 B,2 | G3 A (BA)(GF) | (F2 GF E2) CC | 
 F3 G (AG)(FE) | D2 B,2 G2 GF | E2 GG DD E2 | F6 C2 | F6 G2 | A6 B2 | c2 C2 (BG)(AE) | 
 (F2 E2 D2) C2 | F6 G2 | A6 B2 | c2 C2 (BG)(AE) | F6 ||  