Develop a piece of music by incorporating the provided motif and following the outlined musical structure represented by alphabet characters.
X:1
L:1/8
M:4/4
K:G
['(g3 a) (f3 g) (d2 B2) (B2', '(ed)(cB) B4 c4 B4']  
X:1
L:1/8
M:4/4
K:G
 z2 | (g3 a) (f3 g) | (d2 B2) (B2 G2) | c4 d4 | ^c4 d4 | (g3 a) (f3 g) | (d2 B2) (B2 G2) | 
 (cd)(ec) d2 c2 | B6 :| d2 | (ed)(cB) B4 | c4 B4 | A4 (G2 B2) | ^c4 d4 | (ed)(cB) B4 | c4 B4 | 
 A2 (Bc) B2 c2 | B6 d2 | (ed)(cB) B4 | c4 B4 | A4 (G2 B2) | ^c4 d4 | (g3 a) (f3 g) | 
 (d2 B2) (B2 G2) | (cd)(ec) (d2 c2) | B6 ||  