Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:4/4
K:Amix
['e<c c>B B<A', 'e<c c<e f2'  
X:1
L:1/8
M:4/4
K:Amix
|: a/ | e<c c>B B<A A>a | e<c c<e f2 f<a | e<c c>B B<A A>e | f/g/a e>a c<B B3/2 :| a/ | 
 e<c c<e f2 f<a | e<c c<a e<c c<a | e<c c<e f2 f>e | f/g/a e>a c<B B3/2 a/ | e<c c<e f2 f<a | 
 e<c c<a e<c c>e | f/g/a e>a d>a c>e | f/g/a e>a c<B B3/2 ||  