Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:4/4
K:C
['GAB AGA', 'efg fed cBA GFG Bcd efg a2']  
X:1
L:1/8
M:4/4
K:C
 BEA ue2003 |[M:6/8][K:G]SOSOO .!fermata!PMTCOMDED GAB | AGA BGE | DED GAB | AdB AGE | DED GAB | 
 AGA Bcd | ege dBG | DEF G2 z :: dBd efg | fed cBA | GFG Bcd | efg a2 (e/f/) | gbg{b} afd | 
 (e>gf/e/) dBG | ege dBG | DEF G2 z :|  