Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:6/8
K:F
['F2 F d2', 'f3- fgf']  
X:1
L:1/8
M:6/8
K:F
|: F2 F d2 c- | cBA GFE | F2 F d2 c | Ace fcA | F2 F d2 c- | cBA GFE |1 FED CDE | FGA BAG :|2 
 cff gfe | f3- fgf |: ecc gcc | b2 a g2 f | eee bge | f3- fgf | ecc gcc | b2 a g2 f | eba gfe |1 
 f3- fgf :|2 fcA F3 ||  