Compose a piece of music following the given alphabetical representation of the musical structure and the provided motif.
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
['ABdf e2', 'a2 fa']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
 f | ABdf e2 dB | AF F2 EFDF | ABdf e2 df | afeg fd d2 | ABdf e2 dB | AF F2 EFDF | ABdf e2 df | 
 afef d3 || f | a2 fa bafa | a2 fd edBd | a2 fa bafb | afef d3 f | a2 fa bafa | a2 fd edBd | 
 A2 FB ABdf | afef d3 ||  