Develop a musical arrangement based on the stated alphabetical form and the given motif.
X:1
L:1/4
M:4/4
K:D
['F A', 'G B']  
X:1
L:1/4
M:4/4
K:D
 F A G F | A E D D | A d c A | B3/2 B/ A2 :| | G B d D | F A E2 | G B F A | E3/2 D/ D2 ||  