Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:3/4
K:Bb
['F2 D2']  
X:1
L:1/8
M:3/4
K:Bb
 FG | F2 D3 C | B,2 C3 C | F2 D2 (ED) | C4 C2 | G2 B3 G | (AB) c2 (BA) | F3 G B2 | G4 C2 | 
 G2 B3 G | (AB) c3 c | F2 G2 (BA) | G4 AG | F2 D2 C2 | B,2 C2 F2 | F2 D2 (ED) | C4 ||  