Craft a musical work based on the specified structure and given theme.
X:1
L:1/8
Q:1/4=80
M:6/8
K:G
['z a3 (gf) g (ag) f']  
X:1
L:1/8
Q:1/4=80
M:6/8
K:G
 c2 d | e2 d (c2 B) | A2 z d2{e} d | (c2 d) e2 =f | e- e2 z2 e | (cd) | e2 e (e=f) g | a3 g z z | 
 a3 (gf) g | (ag) f e2 d | !fermata!e2 z a3 | (gf) g (ag) f | e6 |]  