Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:4/4
K:F
['B2 c2']  
X:1
L:1/8
M:4/4
K:F
"F" FcA=B-"Fdim" B2 c2 |"F" FAc=B-"Fdim" B4 |"F" FcA=B-"Fdim" B2 c2 |"Bb" BABA-"C7" A2 G2 | 
"F" FcA=B-"Fdim" B2 c2 |"F" FAc=B-"Fdim" B4 |"F" FcA=B-"Fdim" B2 c2 |"C7" (3B2 A2 G2"F" F>FED |: 
"C7" C2 D^D EG-GA | BABA- A2 G2 |"F" FE F2 A^G A2 | c=B c2 f2 ed |"C7" c2 D^D EG-GA | BABA- A2 G2 | 
"F" F3 F DCA,C |1"F" F3 F E2 D2 :|2"F" F3 F E2 _E2 |"Bb" D2 DE FE D2 |"F" C=B, C2 F4 | 
"C7" E2 EF GF E2 |"F" F2 G2 A4 |"Bb" BABc dcde |"F" fe f2 a2 f2 |"C7" e2 ef gf e2 |"F" f8 |]  