Compose a song based on the given alphabetical pattern and musical motif.
X:1
L:1/8
Q:1/2=100
M:3/2
K:D
['f2 fg a2']  
X:1
L:1/8
Q:1/2=100
M:3/2
K:D
|:"^A""D" f2 ef"G" gfed"D" fg a2 |"E7" b2 e4 d2"A" c2 A2 |"D" f2 ef"G" gfed"D" fg a2 | 
"A7" A2 d4 A2"D" F2 D2 ::"^B""G" B2 AB"C" =cBAG"D" F4 |"E7" E2 e4 d2"A" c2 A2 | 
"G" B2 AB"C" =cBAG"D" F3 E |"D" D2 d4 A2 F2 D2 :|  