Craft a musical composition that adheres to the specified musical theme and letter-based structure.
X:1
L:1/4
M:4/4
K:Amin
['A/B/ c']  
X:1
L:1/4
M:4/4
K:Amin
"Am" e A A e/d/ |"Am" e A A A/B/ |"G" c c B c |"D" d2 d c/d/ |"Am" e e d/c/ B |"Em" c c B/A/ G | 
"Am" A c"Em" B/A/ G |"Am" A4 :|"Am" A/B/ c A/B/ c |"Em" B G G2 |"Am" A/B/ c A/B/ c |"D" d2 d c/d/ | 
"Am" e e d/c/ B |"Em" c c B/A/ G |"Am" A c"Em" B/A/ G |"Am" A4 :|  