Design a music piece by incorporating the given alphabetic pattern and motif.
X:1
L:1/8
Q:1/2=90
M:2/4
K:G
['(GB)DG B2', '(fa)df a2 gf (gb)dg b2']  
X:1
L:1/8
Q:1/2=90
M:2/4
K:G
 (Bc) | dgfe dcBA | (GB)DG B2 AG | (FA)DF A2 (GF) | (GB)DG B2 (Bc) | dgfe dcBA | (GB)DG B2 AG | 
 FGAB cdef | g2 g2 g2 :: (ag) | (fa)df a2 gf | (gb)dg b2 ag | (fa)df a2 gf | (gb)dg b2 Bc | 
 dgfe dcBA | (GB)DG B2 AG | FGAB cdef | g2 g2 g2 :|  