Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:3/4
K:D
['FF G2 EC DD']  
X:1
L:1/8
M:3/4
K:D
 DD | FF G2 EC | DD D3 D/D/ | FE G2 AB | =cB A3 D | FA d2 =cA | =cB A3 D | FF G2 EC | DD D2 |]  