Develop a musical composition using the alphabetic representation of the specified sequence and incorporating the given motif.
X:1
L:1/8
Q:1/4=120
M:6/8
K:G
['DEF GFG AFE D3/2 z/ B BAB', 'z/ BAB c3/2 z/ A AGA B3/2']  
X:1
L:1/8
Q:1/4=120
M:6/8
K:G
 DEF GFG | AFE D3/2 z/ B | BAB c3/2 z/ A | AGA B3/2 z/ G | DEF GFG | AFE D3/2 z/ B | BAB dcB | 
 cBA G3/2 z/ |: BAB c3/2 z/ A | AGA B3/2 z/ G | BAB dcB | cBA G3/2 z/ :|  