Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:3/4
K:F
['c3 B']  
X:1
L:1/8
M:3/4
K:F
 F | AB c3 B | AG F2 z f | fc d2 c2 | B2 A2 z c | cA d3 c | Bd c3 B | AGcB A2 | G2 F2 z |]  