Craft a musical composition that incorporates the supplied alphabet sequence and motif.
X:1
L:1/8
Q:1/8=232
M:4/4
K:G
['', 'BG GG G3']  
X:1
L:1/8
Q:1/8=232
M:4/4
K:G
 dc |: BG GG G3 c | BG GA Bd gd | BG GG G3 B | AG FG AB cd | BG GG G3 c | BG GA Bd gd | 
 BG GG G3 B | AG FG AB cd | Bd dd d3 c | Bd ef gf gd | Bd dd d3 B | AG FG AB cd | Bd dd d3 c | 
 Bd ef gf ga | bg af gf ec | AG FG AB cd :|  