Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/4
M:3/4
K:C
['A G']  
X:1
L:1/4
M:3/4
K:C
 (D/E/) | G A (G/A/) | B G (A/G/) | E D E | D2 (D/E/) | G A G | B d (e/d/) | B A G | A2 (D/E/) | 
 G A A | B d d/e/ | d A G | A2 D/E/ | G A G | B A G | E D E | D2 ||  