Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:3/4
K:C
['c2 eg']  
X:1
L:1/8
M:3/4
K:C
 eggefd | eggefa | eggefd | eggefa | ag^fg=fd | eg^fgag | baegfd | ceec G2 | cde d2 BG | 
 cde d2 BG | cd e2 e2 | d4 BG | GAB c2 eg | fed c2 eg | GAB c2 c2 | d4 BG | fed c2 eg | f2 e2 c2 | 
 edc A2 d2 | G6 |]  