Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/8
M:2/4
K:G
['B G3', 'dc BGAF G3']  
X:1
L:1/8
M:2/4
K:G
|:{A} .B3 B .c3 c | B G3 AFDc | B G3 .c2 dc |1 BGAF G2 z2 :|2 BGAF G3 D |:{A} B2 dB e3 d | 
 B G3 c A3 | Bddg e2 dc | BGAF G3 D :|  