Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/8
M:4/4
K:D
['d2 BA', 'gage ce A2']  
X:1
L:1/8
M:4/4
K:D
 D2 FA d2 BA | d2 BA ddBA | D2 FA d2 BA | ddBA c4 | c2 ef g2 fe | ggfe a3 g | abaf gecA |1 
 d3 c dBAF :|2 d3 c defg |: a2 af df a2 | abaf df a2 | f2 ed ffed | ffed e3 f | gage ce A2 | 
 gage ce A2 | g2 fe aafe |1 d3 c defg :|2 d8 |]  