Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/4
M:3/4
K:Bb
['B A']  
X:1
L:1/4
M:3/4
K:Bb
 D | G G G/A/ | B A G | F (G/F/) E | D2 G/A/ | B A B | c B c | d2 (B/c/) | d (d/c/) B | 
 c c (B/A/) | G F G | D d c | B A G | D G A | G2 ||  