Compose a piece of music using the provided motif and follow the designated alphabet character structure.
X:1
L:1/8
M:6/8
K:G
['BGG BGG', 'G3 Bdd Add ^ceg fed agb gfa', 'd3 Bcd efg ABc def GAB cde', 'G3 dBG ecA fdf g3 ecA dBG']  
X:1
L:1/8
M:6/8
K:G
 BGG BGG | GBd gfg | BGG BGG | DEF G3 :: Bdd Add | ^ceg fed | agb gfa | AB^c d3 :: Bcd efg | 
 ABc def | GAB cde | DEF G3 :: dBG ecA | fdf g3 | ecA dBG | DEF G3 :|  