Craft a musical composition that adheres to the specified musical theme and letter-based structure.
X:1
L:1/8
M:6/8
K:C
['g2 c']  
X:1
L:1/8
M:6/8
K:C
"^A" c/d/ |"C" edc"F" A2 F |"^C/e" G2 c"^G7/d" E2 c |"C" edc g2 c |"Dm" Bdd"G7" d2 c/d/ | 
"C" edc"F" A2 c |"C" G2 c"Am" E2 c |"Dm" def"G7" e2 d |"C" edc c2 ::"^B" c/d/ |"C" ed"^C/e"c g2 c | 
"F" c'2 a"G7" g2 c |"C" edc g2 c |"Dm" Adc"G7" BAG |"C" ed"^C/c"c g2 c |"F" c'2 a"G" ggf | 
"Am" abc'"^G7/b" bd'b |1"C" c'ge c2 :|  