Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
M:4/4
K:A
['|{/f} e2{/d} c2', 'f<BBa e<Ac<A e<AcA dfce fBB f eaca', 'f<BBa eaca eace dfce fBB a e<Ac>A', 'f<BBa e<AcA']  
X:1
L:1/8
M:4/4
K:A
 a |{/f} e2{/d} c2 eAAa |{/f} e2{/d} c2 fBBa |{/f} e2{/d} c2 eAcA | dfce fBB :: a | e<Ac<A e<AAf | 
 e<Ac<A f<BBa | e<Ac<A e<AcA | dfce fBB :: f | eaca e<AAf | eace f<BBa | eaca eace | dfce fBB :: 
 a | e<Ac>A e<AAa | e<AcA f<BBa | e<AcA f<BBa | e<AcA e<AcA | dfce fBB :|  