Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:G
['B2 (dc) BGge', 'G3 c BGBd AFAc BGBd gedc BGBd', '(B/c/d) d2', '(B/c/d) (BG) (A/B/c) (AF)']  
X:1
L:1/8
M:4/4
K:G
 uc | B2 (dc) BGge | d2 (dB) AFcA | B2 (dc) BGge | dBcA G3 :: c | BGBd AFAc | BGBd gedc | 
 BGBd AFAd | dBcA G3 :: c | (B/c/d) d2 dgab | (A/B/c) c2 cfga | (B/c/d) d2 dfgb | afge d3 :: c | 
 (B/c/d) (BG) (A/B/c) (AF) | GABc dgec | (B/c/d) (BG) (A/B/c) (AF) | GcBA G3 :|  