Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:6/8
K:Gmix
['B>AG ABd e>fg', 'G2 d d>Bd e>fg age (f<d)d (gfe)']  
X:1
L:1/8
M:6/8
K:Gmix
 (d/>c/) | B>AG ABd | e>fg (d<B)G | (g>fe) (dBG) | (EcB) (A2 d/>c/) | B>AG ABd | e>fg (dB>)G | 
 g>fe (d<g)B | (DEF) G2 || d | d>Bd e>fg | age (f<d)d | (gfe) (dfa) | (gfe) d2 d | 
 .g(b/a/g/f/) .e(a/g/f/e/) | dBd !fermata!g2 (g/f/) | e>fg (d<B)G | (DEF) G2 ||  