Compose a piece of music using the provided motif and follow the designated alphabet character structure.
X:1
L:1/8
M:4/4
K:D
['B2 dB', 'BAdA BAdA']  
X:1
L:1/8
M:4/4
K:D
 efed B2 dB | AFAB d3 f | efed B2 dB | AFDF E2 D2 | efed B2 dB | AFAB d2 ef | gfed B2 dB | 
 AFDF E2 D2 :| FA (3AAA BAdA | BAdA BAdA | FA (3AAA B2 dB | AFDF E2 DE | FA (3AAA BAdA | 
 BAdA BAdA | F3 A G3 B | AFDF E2 D2 :|  