Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
Q:1/8=180
M:2/2
K:G
['g4 d4 dcBc', 'A4 A4 d4 cBAG F2 ED GA'  
X:1
L:1/8
Q:1/8=180
M:2/2
K:G
 g4 d4 | dcBc d4 | dcBd cBAc | BAGB Adef | g4 d4 | dcBc d2 g2 | cBAc BAGB | AA A2 A4 :| A4 d4 | 
 cBAG F2 ED | GA B2 A4 | ga b2 a4 | g4 d4 | edce dcBd | cBAc BAGF | G2 GG G4 :|  