Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
Q:1/2=110
M:4/4
K:G
['G2 BG', '(ga)bg (ag)fd']  
X:1
L:1/8
Q:1/2=110
M:4/4
K:G
 D | G2 BG (Gd)dB | c2 ec eg g2 | G2 BG (Bd)dg | (ed)cB A2 G :: d | (ga)bg (ag)fd | (ef)ge (dc)BG | 
 (ga)bg (ag)fd | (eg)fa g2 ga | (ba)gf (gf)ed | (ef)ge (dB)GB | (cB)cd (ef)ge | (dB)gB A2 G :|  