Form a musical piece based on the provided motif while observing the defined structure.
X:1
L:1/16
M:2/4
K:Amix
['', 'fg a2a2 efed cdef gefd eaaf efed', 'efed cdef gefd eaaf efed |1 cABG'  
X:1
L:1/16
M:2/4
K:Amix
 fg |: a2a2 efed | cdef gefd | eaaf efed |1 (cA)BG A2(fg) :|2 cABG A2A2 |: BGGB d2d2 cdef2 gefd | 
 eaaf efed | cdef gefd | eaaf efed |1 cABG A2A2 :|2 cABG A2 ||  