Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:2/4
K:G
['GF/G/ A/B/A/G/ FD DG BG AB cd/c/', 'B>^A BG c>B cA']  
X:1
L:1/8
M:2/4
K:G
|: GF/G/ A/B/A/G/ | FD DG | BG AB | cd/c/ BA | GF/G/ AG | FD D>A | B/c/d cA | G2 G2 :: B>^A BG | 
 c>B cA | B>^A Bd | cA FD | B>^A BG | c>B cA | B/c/d cA | G2 G2 :|  