Compose a music piece that includes the specified motif while adhering to the outlined alphabetical sequence.
X:1
L:1/8
M:4/4
K:Dmix
['FGAG FDDF- FGAG', 'cAGE D3']  
X:1
L:1/8
M:4/4
K:Dmix
|: FGAG FDDF- | FGAG FDDd | de=fe dcAG | FGAB cBAG | FGAG FDDF- | FGAG FDDC | A,DD/D/D CDA,D |1 
 G,A,CD EFDF :|2 G,A,CD EFDd |: dfed cAAd | cAGA FAEA | dfed ^cdef | gfge fde^c | dfed cAAd | 
 cAGA FAEA | DAAB cAdB |1 cAGE D3 d :|2 cAGE D3 F ||  