Craft a musical composition that incorporates the supplied alphabet sequence and motif.
X:1
L:1/8
Q:1/4=144
M:4/4
K:D
['AF DF']  
X:1
L:1/8
Q:1/4=144
M:4/4
K:D
|:"^PART A""D" AF DF AF DF | A2 d2 d2 cB | AF DF AF DF |"A7" G2 E2 E2 FG |"D" AF DF AF DF | 
 A2 d2 d2 de | fa fd"A7" eg ec |"D" d2 d2 d4 ::"^PART B""D" f2 fg a2 f2 |"A" e2 ef g2 e2 | 
"D" f2 fg a2 f2 |"A" ed cB A4 |"D" f2 fg a2 f2 |"A" e2 ef g2 e2 |"D" fa fd"A7" eg ec | 
"D" d2 d2 d4 :|  