Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:2/4
K:G
['d/c/ BB Bc/B/', 'AB/c/ dd d/c/B/A/ GG G2 ce ce']  
X:1
L:1/8
M:2/4
K:G
"^G:" d/c/ |:"G" BB Bc/B/ |"D7" AA AB/c/ | dd d/c/B/A/ |"G" GG G2 ::"C" ce ce |"G" Bd Bd | 
"D7" cD DF |"G" AG G2 :|[K:D]"^D:" a/g/ |:"D" ff fg/f/ |"A7" ee ef/g/ | aa a/g/f/e/ |"D" dd d2 :: 
"G" gb gb |"D" fa fa |"A7" gA Ac |"D" ed d2 :|  