Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
Q:1/4=120
M:2/4
K:Bb
['F, G,A,B,C', 'C2 C2']  
X:1
L:1/8
Q:1/4=120
M:2/4
K:Bb
 DEDC | C3 F, | G,A,B,C | CB,A,C | B,A,A,F, | G,3 F, | G,A,B,C | DEDC | C3 F, | G,A,B,C | CB,A,C | 
 B,CA,F, | G,4- | G,4 | F,2 G,A, | B,4 | B,CDB, | C2 B,2 | A,2 CA, | B,CA,B, | G,4 | F,2 G,A, | 
 B,4 | B,CDB, | C2 B,2 | A,2 CA, | B,4- | B,4 |: C2 C2 | C2 DE | FEDC | C2 A,2 | B,CA,B, | G,4 | 
 D4 | C3 B, | A,G, F,2 | B,3 A, | C2 A,B, | G,4- | G,4 :|  