Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
M:2/2
K:D
['D2 FA']  
X:1
L:1/8
M:2/2
K:D
|:"D" D2 FA d2 dc |"A7" A2 GE AEGE |"D" D2 FA dfed |1,3"A7" cAGE"D" EDFA :|2,4"A7" cAGE"D" ED D2 :: 
"D" f2 fg fedf |"A7" e2 ef edcB :|1,3 ABcd edcd | ea a2 eaag :|2,4 ABcd e2 dB | A2 GE"D" FD D2 :|  