Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/8
M:2/4
K:F
['ag{/a} g/f/g']  
X:1
L:1/8
M:2/4
K:F
"F" ca a>g | gf{/g} f/e/f | cf f>e |"Gm" ed{/e} d/c/d | db b>a |"C7" ag{/a} g/f/g |1 fe{/f} e/d/e | 
"F" dc{/d} c/=B/c :|2 fe de |"F" ff ff |:[K:C]"G7" f/e/d/e/ fa |"C" ag{/a} g/f/g | 
"G7" gf{/g} f/e/f |"C" fe{/f} e/d/e |"G7" f/e/d/e/ fa |"C" ag{/a} g/f/g |"G7" f/e/d/c/ Bd |1 
"C" ce cf :|2"C" ce c z |]  