Compose a musical piece based on the given motif and alphabet representation.
X:1
L:1/4
Q:1/2=100
M:4/4
K:D
['a g e']  
X:1
L:1/4
Q:1/2=100
M:4/4
K:D
 A |"D" d A F A | d2 d f |"G" e d c d |"A" e f g f/g/ |"D" a f"A" g e |"D" d/e/d/c/"A" A F | 
"Em" G B"A" A/B/A/G/ |"D" F D D :: z |"D" f3/2 f/ f f |"G" z g"A" g2 |"D" f3/2 f/ f a | 
"Em" g f"A" e f/g/ |"D" a f"A" g e |"D" d/e/d/B/ A F |"Em" G B"A" A/B/A/G/ |"D" F D D :|  