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
['', 'G B2', 'B4 gfed cABc']  
X:1
L:1/8
M:4/4
K:D
 AG |: F A2 F ABAF | G B2 G B2 ed | ABcd egfe | defd A2 AG | F A2 F ABAF | G B2 G B2 ed | 
 ABcd egfe |1 d2 f2 d2 AG :|2 d2 f2 d2 fg |: a2 f2 dcdf | gfed B4 | gfed cABc | defg a2 fg | 
 a2 f2 dcdf | gfed B4 | gfed cABc |1 d2 f2 d2 fg :|2 d2 f2 d2 ||  