Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:4/4
K:F
['F3 G A4 d4 (A3 G) F2']  
X:1
L:1/8
M:4/4
K:F
 F3 G | A4 d4 (A3 G) F2 DE | F4 F4 F4 c3 c | d4 f4 f4 e3 c | d4 f4 d6 c2 | d4 e4 f6 d2 | 
 e3 d c2 f2 d4 F3 G | A4 d4 (A3 G) F2 (DE) | F4 G4 F4 x4 |]  