Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/16
Q:1/8=80
M:2/2
K:none
['|{g} g2{BG}B2{gcd}c2>B2 |{g}'  
X:1
L:1/16
Q:1/8=80
M:2/2
K:none
|:{g} A>d |{gfg} f4{g} f>e{g}f<a |{g} g2{BG}B2{gcd}c2>B2 |{g} A2{Gdc}d2{gfg}f>e{g}f<a | 
{ef} e4{A} e2{g}A>d |{gfg} f4{g} f>e{g}f<a |{g} g2{BG}B2{gcd}c2>B2 |{g} A2{ag}a2{f}g>e{g}B>c | 
{Gdc} d4{gdc} d2 ::{g} c>d |{gef} e4{A} e2{g}A>d |{gfg} f4{e} f2>e2 |{Gdc} d2>e2{gfg}f2{ag}a2 | 
{ef} e4{A} e2a>g |{fg} f2A2{gfg}f>e{g}f<a |{g} g2{BG}B2{gcd}c2>B2 |{g} A2{ag}a2{f}g>e{g}B>c | 
{Gdc} d4{gdc} d2 :|  