Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/4
M:4/4
K:D
['A, D']  
X:1
L:1/4
M:4/4
K:D
 A, | D C/B,/ A, B, | A,3/2 G,/ F, A, | B, B, B,/C/D/B,/ | A,/G,/F,/G,/ A, D | D, E, F, G, | 
 A,/^G,/A,/B,/ A, D | B,2 z E | C2 z G | F G/E/ D C | D2 D2 | B,/B,/B,/B,/ B, E | 
 C/A,/A,/A,/ A, G | F G/E/ D C | D2 z |]  