Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:6/8
K:F
['F3 |{EF}', 'f2 c', 'EDC cBA agf edc fed cBA dcB'  
X:1
L:1/8
M:6/8
K:F
|: cAF F3 |{EF} F3{EF} F3 |{EF} cAF F3 |{EF} GAF EDC | cAF F3 |{EF} F3{EF} cBA | def cBA | 
 GAF EDC :| cBA f2 c | f2 c f2 d | cBA f2 A | GAF EDC | cBA f2 c | fed cBA | dcB AGF | EGF EDC |] 
 cBA f2 c | f2 c f2 d | cBA fcA | GAF EDC | cBA agf | edc fed | cBA dcB | AGF EDC |]  