Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:4/4
K:Bb
['(DE) F2']  
X:1
L:1/8
M:4/4
K:Bb
 (DE) |"Bb" F2 (DE) F2 D2 |"Eb/Bb" B4"Bb" B2 (DE) |"Bb/F" F2 F2"F7" F2 F2 |"Bb" D4 z2 (DE) | 
"Bb" F2 (DE)"Bdim" F2 (=EF) |"F/C" A4 c2 (FG) | A2 (B=B)"C7" c2 (GA) |"F7" F4 z2 (FG) | 
 F2 (FG) F2 (GF) |"Bb" B4 F2 (FG) |"F7" F2 (FG) F2 (GF) |"Bb" d4 z2"Bb7" B2 | 
"Eb" B2 (AB) (cB) (AG) |"Bb/F" F2"Gm" B4 (DE) |"Bb/F" F2 F2"F7" F2 F2 |"Bb" B,4 z2 |]  