Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:4/4
K:G
['g2 dc BG G2', 'dff/e/f dgg/f/g']  
X:1
L:1/8
M:4/4
K:G
 (3d/e/f/ | g2 dc BG G2 | FGAB cdef | g2 dc BG G2 | AdcA G3 :: dff/e/f dgg/f/g | defd edcA |1 
 dff/e/f dgg/f/g | fdcA G4 :|2 defg a3 g | fdcA G4 ||  