Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/16
M:3/4
K:C
['g2eg e2c2', "fgab c'4 c'afa ageg"]  
X:1
L:1/16
M:3/4
K:C
 G2c2 c2e2 e2g2 |{a} g2f2{/g} f2ef e2d2 | G2B2 B2d2 d2f2 | f2ef e2de d2cB | c2eg c'2g2 c'bab | 
 c'2gc' g2eg e2c2 | a^gab agab a2b2 | c'2g2 g2eg e2c2 | dcBc G2G2 c2e2 | gafg efde c4 :: 
 d^cde d2e2 .f2d2 | (ec).d.e .f.g.a.b (c'g).e.c | G2GG G2G2 f4 | (ec).d.e fgab c'4 | 
 c'afa ageg f2df | ecde fgab c'4 | c'afa ageg f2df | ecde fgab c'4 | c'afa ageg f2d2 | 
 e2de d2cd [c'c]4 :|  