Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
Q:1/4=130
M:4/4
K:G
['d dBce dg z g g>fge d2', 'G3 g aefd gBcd F3 d dBce'  
X:1
L:1/8
Q:1/4=130
M:4/4
K:G
"_vb" d | dBce dg z g | g>fge d2 z d | dcAF GBdg | gecA G2{FAG} F3/2 d/ | dBce dgfg | agfe d3 d | 
 dc{c} B A Ggfe | dBB>A G3 || g | aefd gBcd | eABc"^H" F3 d | dBce dgfg | gfef"^H" g3 e | 
 dBA>G"^H" G2 [Bb]2 | [Bb][Aa][Bb][Aa] [Gg]2 |]  