Construct a musical piece using the designated motif and sticking to the alphabetical form presented.
X:1
L:1/8
M:2/2
K:G
['BG B/c/d', 'bgba gfed edgB cAAc']  
X:1
L:1/8
M:2/2
K:G
 c | BG B/c/d cBAG | FDAG FDDc | BG B/c/d gfed | e/f/g df gGG :| g | bgba gfed | edgB cAAc | 
 dbba gfed | e/f/g f/g/a bgga | bgba gfed | edgB cAAc | B/c/d Ac BGDB, CEDF G2 [B,G] ||  