Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:F
['F>c A/B/c/A/', 'G>gg>a f>ga>g']  
X:1
L:1/8
M:4/4
K:F
 F>c A/B/c/A/ d>GB>d | F>c A/B/c/A/ F>fa>f | g>ef>A G>AB>d |1 c>f a/g/f/e/ f<F A>f :|2 
 c>f e/f/g/e/ f<FA<c || f/g/a/g/ f>F G>gg>a | f/g/a/g/ f>c d<f c>A | B/c/d A/B/c G>gg>a | 
 f>ga>g f<F A>c | f/g/a/g/ f>F G>gg>a | (3fga (3gfe (3def (3cBA | (3Bcd (3ABc G>gg>a | 
 f>ga>g f<FA<f ||  