Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
M:6/4
K:Amin
['(B2 E2)']  
X:1
L:1/8
M:6/4
K:Amin
 B2 | (c2 A2) c2 (B2 E2) B2 | c2 (AB) (cA) (B2 E2) B2 | cd e2 c2 B2 E2 ^G2 | A4 a2 a4 B2 | 
 c3 B A2 B3 A ^G2 | A3 B (A/B/c) B3 c d2 | c3 B A2 B3 A ^G2 | A4 a2 a4 B2 | e2 (cd) (ec) g3 a g2 | 
 d2 (Bc) (dB) f4 f2 | f2 gf e2 e2 fe d2 | d3 edc d2 B2 G2 | c3 d cd d4 c2 | c2 E2 G2 G2 E2 C2 | 
 f3 e dc B2 E2 B2 | c2 (AB) (cA) B2 E2 B2 | cBcd ec edef ge | ^fefg a^f ^g4 a2 | 
 (e2 B2) c2 (B2 E2) ^G2 | A6- A4 |]  