Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:6/8
K:Gmin
['', 'BG^F G2', 'BG^F G2']  
X:1
L:1/8
M:6/8
K:Gmin
 C |: DGA B2 c/B/ | AFF F3 | g3 g2 a/g/ | fdd d2 =e | fFf eEe | dDd cBc | fgf d2{e} d/c/ |1 
 BG^F G2 C :|2 BG^F G2 G |: DGB BAG | FAB cBA | Bdg g^fg | fdd d2 c | dd'd' cc'c' | Bbb Aaa | 
 agf ed B/A/ |1 BG^F G2 G :|2 BG^F G2 C ||  