Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:4/4
K:Gdor
['f c<Fc>A c>F A<f c<Fc>A{A} G2 G>f', 'f>(g{fg}a>)g .f.c.A.F (f/e/f/g/) a>c{c} d2 d>g'  
X:1
L:1/8
M:4/4
K:Gdor
 f | c<Fc>A c>F A<f | c<Fc>A{A} G2 G>f | c<Fc>A f>(g{fg}a>)g | f>d{d}c>A [GE]2 [GE] :| c | 
 f>(g{fg}a>)g .f.c.A.F | (f/e/f/g/) a>c{c} d2 d>g | f>gaf gaf>c | d<fc>A{G} [GE]2 [GE]>c | 
 f>(g{fg}a>)g .f.c.A.F | (f/e/f/g/) a>c{c} d2 d>g | (f/e/f/g/) a>d (g/f/g/a/) f>c | 
 d<fc>A{A} [GE]2 [GE] ||  