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
['', 'dB AFAd BcdB (3ABA dA e f3', 'FD (3DED', 'agfd eA A2 EA g2']  
X:1
L:1/8
M:4/4
K:D
 dB |: AFAd BcdB | (3ABA dA e f3 | AddA BcdB | AF F2 EF D2 :: FD (3DED EFGE | FD (3DED =C4 | 
 FA A2 BcdB | cdec dBAG :| FA A2 agfd | eA A2 EA g2 | fd d2 agfd | edcB Acde | fd d2 agfd | 
 eA A2 EA g2 | fdge afed | cdec d4 ||  