Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:5/8
K:F
['DGAFGD DEDGE D D3 D2 AB AG/A/FD']  
X:1
L:1/8
M:5/8
K:F
 DGAFGD | DEDGE | D D3 D2 AB | AG/A/FD | FGA<GzAGE | D/E/C F2 E/D/ | C>DF>DCD/F/D/C/B, | C4 |]  