Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
M:3/4
K:D
['D)(E F)(G A)d', 'ee ed d<f{g} f{gf}e/f/ g(f e)(d c)(B'  
X:1
L:1/8
M:3/4
K:D
 (G | F)(E D)(E F)(G | A)d f2({f} f{gf}e/f/) |{b} ag e2{d} c{dc}B/c/ | dB A z G2 | 
{G} F(E D)(E F)(G | A)d f2{f} f{gf}e/f/ |{g} fe gf ed | (c<e) d3 :: d | dc c<e ee | 
{f} ed d<f{g} f{gf}e/f/ | g(f e)(d c)(B | A<)d BG F{GF}(E | D>)E F(G A)A | d>e f2{g} f{gf}e/f/ | 
{g} fe gf ed | (c<e) [dD]3 :|  