Create a musical composition using the given motif and adhering to the specified musical form represented by alphabet characters.
X:1
L:1/8
M:4/4
K:F
['c<F c>B', 'a<f c>B']  
X:1
L:1/8
M:4/4
K:F
 f | c<F c>B A>Bc>f | c<F c>B A3 f | c<F c>B A>Bc>A | B>G _E/F/G B3 :: b | a<f c>B A<Bc>b | 
 a<f c>B A2 (f>g) |1 a<f c>B A>Bc>A | B>G _E/F/G B3 :|2 (3agf (3gfe (3fed (3cBA | B>G _E/F/G B3 |]  