Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
['BGdB cAec BGdB', 'gd B/c/d/B/']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
 c | BGdB cAec | BGdB cAAc | BGdB cAec | BGdB G2 G :: f | gd B/c/d/B/ gd B/c/d/B/ | 
 gd B/c/d/B/ aAAf | gd B/c/d/B/ gd B/c/d/B/ | cAdB G2 G"^*" :|  