Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:4/4
K:G
['B2 (GB) dgdB', '(B/A/G) dG']  
X:1
L:1/8
M:4/4
K:G
 d | B2 (GB) dgdB | gg a/g/f/e/ aAAd | B2 (GB) dgdB | cA (d/c/B/A/) BGG :: d | (B/A/G) dG eGdG | 
 (B/A/G) dG eAAe | (B/A/G) dG eGdG | egfa gGG :|  