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:D
['AGFG A2 Bc', 'd2 ef']  
X:1
L:1/8
M:4/4
K:D
 B | AGFG A2 Bc | (3dcB cA B3 B | AGFG A2 Bc | dBAG FDDB | AGFG A2 Bc | (3dcB cA BdcB | 
 AGFG A2 Bc | dBAG FDD || e | (3fga fd d2 ef | gefd e2 de | (3fga fd d2 ef | gfed cA A2 | 
 agfd d2 ef | gefd e2 e2 | AGFG A2 Bc | dBAG FDD ||  