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
['DBBA B3 A BAdB', 'E2 defe d3 A BAFA dAFA defe']  
X:1
L:1/8
M:4/4
K:D
|: DBBA B3 A | BAdB AFEF | DF FG A3 B | AFBF AFEF | DBBA B3 A | BAdB ABde | f3 e defe | 
 dBAF BE E2 :: defe d3 A | BAFA dAFA | defe defg | afbf afeg | f3 d efdB | AF F2 ABde | f3 e defe | 
 dBAF BF F2 :|  