Develop music based on the depicted musical form represented by letters, accompanied by the provided motif.
X:1
L:1/16
M:4/4
K:D
['a4 g4 f4 e4']  
X:1
L:1/16
M:4/4
K:D
|:"D" d6 A2 d2 f6 |"A7" a4 g4 f4 e4 |"D" d6 A2 B4 c4 ::"D" a6 g2 f4 d4 |"G" b4 a4 g8 |"A7" e16 | 
"A7" a6 b2 c'2 b6 |"A7" a4 g4 f4 e4 |"D" d16 ::"G" b4 g4"D" fgag f4 |"A7" efge cABc"D" dcde f4 | 
"G" b4 g4"D" fgag f4 |"A7" efge cABc"D" d4 d4 :|  