Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
M:4/4
K:A
['vc<ue(ve>g a>)veuc>uA F<B B>uA vG>vB e2 c<e(e>g', '(E<A) A2']  
X:1
L:1/8
M:4/4
K:A
|: vc<ue(ve>g a>)veuc>uA | F<B B>uA vG>vB e2 | c<e(e>g a>)ec>A | F<B G>ue c<A- A2 :| 
 vE>vCuA,>uC (E<A) A2 | vF>vDuF>uB (G<B) B2 | E>CA,>C (E<A) (A>G) | vF>B G<e c<A- A2 | 
 E>CA,>C (E<A) A2 | F>DF>B (G<B) (B>d) | (3cBA (3dcB (3edc (3fed | ve>vaug>ub a<A- A2 |]  