Construct a piece of music by converting the stated musical sequence into an alphabetical format and integrating the supplied motif.
X:1
L:1/8
Q:3/8=100
M:6/8
K:Dmix
['BAB G2', 'c BGB']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:Dmix
 c | BAB G2 F | E2 F G2 A | BAB G2 B | AFD D2 c | BAB G2 F | E2 F G2 A | BcB dcB | AFD D2 :: c | 
 BGB d2 c | BGB d2 c | BGB dcB | AFD D2 c | BGB d2 c | BGB def | gfe dcB | AFD D2 :|  