Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:2/4
K:G
['G/A/B/c/ dd gg/g/ e z d z', 'G2 gged gg AG gg ff e/g/f/e/']  
X:1
L:1/8
M:2/4
K:G
 G/A/B/c/ dd | gg/g/ e z | d z B z | A/G/A/B/ G2 :: gged | gg AG | gg ff | e/g/f/e/ d2 | 
 G/A/B/c/ dd | g z e z | d z B z | A/G/A/B/ G2!D.C.! ||  