Develop a musical arrangement based on the stated alphabetical form and the given motif.
X:1
L:1/8
M:2/2
K:D
['de fe', 'a3 b af ed gf ed fd']  
X:1
L:1/8
M:2/2
K:D
|: D3 E FA A2 | de fe dB Bd | Bd Ad Bb b2 | af de fe e2 | DC DE FA A2 | de fe dB Bd | Bd Ad Bb b2 | 
 af de fd d2 :: a3 b af ed | gf ed fd d2 | Bd Ad Bb b2 | af de fe e2 | a3 b af ed | gf ed fd d2 | 
 Bd Ad Bb b2 | af de fd d2 :|  