Construct a piece of music by converting the stated musical sequence into an alphabetical format and integrating the supplied motif.
X:1
L:1/16
M:4/4
K:G
['GABc dBgf efge dBGB cedc', 'gdBd edBd']  
X:1
L:1/16
M:4/4
K:G
 (3DEF | GABc dBgf | efge dBGB | cedc BAGB | AGFE D2(3DEF | GABc dBgf | efge dBGB | 
 cedc B>A (3GAB | A2G2 G2 :: (3def | gdBd edBd | gdBd edBd | gfed cBAG | F>A (3GFE D2(3DEF | 
 GABc dBgf | efge dBGB | cedc B>A (3GAB | A2G2 G2 :|  