Develop a musical piece using the given motif and adhere to the outlined musical structure.
X:1
L:1/8
M:4/4
K:Ador
['A2{B} AB', 'gc (3ccc', 'gc (3ccc'  
X:1
L:1/8
M:4/4
K:Ador
 A2{B} AB cBcA | GFGA GECE | A2{B} AB cBca | gedB cA A2 | A2{B} AB cBcA | GFGA GECE | 
 A2{B} AB cBca | gedB cdef || gc (3ccc gcac | gc (3ccc Bcde | gc (3ccc ac (3ccc | agab gede | 
 gc (3ccc gcac | gc (3ccc B2 (3dcB | AGAB cBca | gedB cA A2 ||"^Variation" g g2 f gbaf | 
 gcBc dcde | gc (3ccc ac (3ccc | agab gede | gc (3ccc gcac | gc (3ccc B2 (3dcB | AGAB cBca | 
 gedB cA A2 ||  