Build a musical arrangement using the indicated alphabet-based system and the given motif.
X:1
L:1/8
M:2/2
K:G
['B4 A2 BA G B3 GABc d']  
X:1
L:1/8
M:2/2
K:G
|: B4 A2 BA | G B3 GABc | d A3 d2 de | fdcA BG G2 :|  