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
['gB BA/G/ FA AB/A/', 'dB de/f/ gf ed']  
X:1
L:1/8
M:2/4
K:G
 (3d/e/f/ | gB BA/G/ | FA AB/A/ | Gg g/f/g/a/ | bg g(3d/e/f/ | gB BA/G/ | FA AB/A/ | Bg g/f/g/a/ | 
 bg g :: B/c/ | dB de/f/ | gf ed | dB de/f/ | gf ed | e/e/e/e/ ed | gB BA | G/G/G/F/ GA | BG ED | 
 G/G/G/F/ GB | A/A/A/B/ AB | Bg fe | dc BA | G/G/G/G/ GB | A/A/A/A/ AB | Bg fa | g2 g :|  