Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:2/2
K:G
['G2 B2 dedB dedB dgdB cecA BdBG', 'gagd gagd gage']  
X:1
L:1/8
M:2/2
K:G
 (3DEF | G2 B2 dedB | dedB dgdB | cecA BdBG | ABAG FDEF | G2 B2 dedB | dedB dgdB | cecA BdBG | 
 AFED G2 :: (3def | gagd gagd | gage dcBB | cd A2 cd A2 | ceab agfd | gagd gagd | gage dcBc | 
 d2 ge dcBA | G2 G2 G2 :|  