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:C
['GAB AGE', 'B d^ce def gfe dBG Bcd efg']  
X:1
L:1/8
M:4/4
K:C
[M:6/8][K:G] .abc D | GAB AGE | ceg dBG | GAB AGE |{G} FDD DEF | GAB AGE | ceg dBG | EFG (A<d)c | 
 BGG G2 :: B | d^ce def | gfe dBG | Bcd efg | (gb)g afd | g/a/b.a gfe | dBg dBG | EFG (A<d)c | 
 BGG G2 :|  