Craft a musical piece that incorporates the given motif and follows the outlined structure.
X:1
L:1/4
M:4/4
K:C
['G G', 'A G'  
X:1
L:1/4
M:4/4
K:C
"^A" G | E G G G | A G G2 | A G G2 | A G G z/ F/ | E G G E | D E C C/D/ | E G G3/2 E/ | D2 C || 
"^B" z | c3/2 c/ A c | A G G2 | A G G2 | A G G2 | c3/2 c/ A c | A G G C/D/ | E G G3/2 E/ | D2 C ||  