Integrate the motif and the alphabetically denoted musical sequence to compose a novel music piece.
X:1
L:1/4
M:4/4
K:D
['D D', 'F G']  
X:1
L:1/4
M:4/4
K:D
 A | D D E F | G2 A A |"^(a)" G F D D | D3 A | A d B B | c B A A | E E F G | A3 A | A d B B | 
 c A B G | E E d B | A3 A | D D E F | G2 A A | G F D D | D3 |]"^(a) var." E F D D |[M:4/4][K:D] A | 
 D D E F | B2 A F | G F D D | D3 A | d d B d | c A B B | E E F G | A3 A | d d B d | c A B c | 
 d d c B | A2 F E | D D E F | G B A F | G F D D | D3 |]  