Compose melodious music utilizing the prescribed letter representation and integrating the given thematic element.
X:1
L:1/16
Q:3/8=42
M:6/8
K:C
['a/g/f/g/) G/(g/f/g/)', "(c'/g/)g/g/ g/g/g/g/ (b/g/)g/g/"]  
X:1
L:1/16
Q:3/8=42
M:6/8
K:C
"^Variation IV" G2 | A/(g/^f/g/ a/g/f/g/) G/(g/f/g/) F/(g/f/g/ a/g/f/g/) E/(g/f/g/) | 
 G/(g/^f/g/ a/g/f/g/) F/(g/f/g/)D/(g/f/g/ a/g/f/g/) E/(g/f/g/) | 
 F/(g/^f/g/ a/g/f/g/) ^F/(g/f/g/) A/(g/f/g/ a/g/f/g/) G/(g/f/g/) | 
 E/(g/^f/g/ a/g/f/g/) G/(g/f/g/) E2 z2 G2 | 
 c/(g/^f/g/) B/(g/f/g/) A/(g/f/g/) G/(g/f/g/) F/(g/f/g/) _E/(g/f/g/) | 
 G/(g/^f/g/ a/g/f/g/) F/(g/f/g/)D/(g/f/g/ a/g/f/g/) E/(g/f/g/) | 
 F/(g/^f/g/ a/g/f/g/) ^F/(g/f/g/) A/(g/f/g/ a/g/f/g/) G/(g/f/g/) | 
 c/(g/^f/g/ a/g/f/g/) G/(g/f/g/) c2 z2 g2 | 
 g/(g/^f/g/) =f/(g/^f/g/) e/(g/f/g/) e/(g/f/g/) d/(g/f/g/) c/(g/f/g/) | 
 B/(g/^f/g/) =f/(g/^f/g/)d/(g/f/g/) B/(g/f/g/) d/(g/f/g/) e/(g/f/g/) | 
 f/(g/^f/g/ a/g/f/g/) b/(g/f/g/) d/(g/f/g/ a/g/f/g/) G/(g/f/g/) | 
 (c/G/)G/G/ (G/e/)e/e/ (e/g/)g/g/ c'2 z2 g2 | 
 g/(g/^f/g/) =f/(g/^f/g/) e/(g/f/g/) e/(g/f/g/) d/(g/f/g/) c/(g/f/g/) | 
 B/(g/^f/g/) =f/(g/^f/g/)d/(g/f/g/) B/(g/f/g/) d/(g/f/g/) e/(g/f/g/) | 
 f/(g/^f/g/ a/g/f/g/) b/(g/f/g/) d/(g/f/g/ a/g/f/g/) b/(g/f/g/) || 
"^Coda" (c'/g/)g/g/ g/g/g/g/(b/g/)g/g/ (c'/g/)g/g/ g/g/g/g/ (b/g/)g/g/ | 
 (c'/g/)g/g/ g/g/g/g/ (b/g/)g/g/ (c'/g/)g/g/ g/g/g/g/ (b/g/)g/g/ | c'c'/c'/ c'c'c'c' c'egc'eg | 
 c4 z e e4 z c | !fermata!c12 |]  