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
M:2/2
K:Dmix
['(3(ABA) (AG) FDGE', 'cA (3(Bcd) (3(ecA)']  
X:1
L:1/8
M:2/2
K:Dmix
|: (3(ABA) (AG) FDGE | FDGF (3(EBE) E2 | (3(ABA) (AG) FDGE | FDGE (3(DED) D2 :: 
 cA (3(Bcd) (3(ecA) AB | cABG (3(EGE) E2 | cA (3(Bcd) (3(ecA) AG | FDGE (3(DED) D2 :|  