Construct a musical work following the provided guidelines and thematic elements.
X:1
L:1/4
Q:1/4=66
M:6/4
K:C
['G g', 'd c3/2 E/ G', 'e c c E'  
X:1
L:1/4
Q:1/4=66
M:6/4
K:C
"^rubato" G g e2 d c | B3/2 F/ G f B2 | G g f2 e d | c3/2 E/ G e c2 | G g e2 d c | B3/2 F/ G f B2 | 
 G g"^poco rit." f2 e d | c4 z B/c/ || d3/2 F/ A !fermata!f e d | c3/2 E/ G !fermata!g e/d/ c | 
 B3/2 F/ G !fermata!g f/e/ d | c3/2 E/ G e !fermata!c2 | d3/2 F/ A f e d | 
 c3/2 E/ G !fermata!g e/d/ c | B3/2 F/ G !fermata!g f/e/ d | 
 c4 z3/2"^ca. 74 gleichmassiger Rhythmus" c/4d/4 || e c c E d/<F/ G/<f/ | e c c E G g | 
 f B B D G g/>f/ | e c c E !fermata!G2 | e c c E d/<F/ G/<f/ | e c c E G g | 
 f d B"^rit." G/>G/ e d | c4 |]  