Compose a tune that integrates the letter-based representation of the determined musical pattern and the given melodic idea.
X:1
L:1/8
M:4/4
K:Dmix
['DAAG ABcA', 'defd cAAc']  
X:1
L:1/8
M:4/4
K:Dmix
|: C | DAAG ABcA | GE E2 cEGE | DAAG ABcA | BcAG FDD :: A | defd cAAc | BGGB cA A2 | defd cAAc | 
 BcAG FDD :|  