Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
M:2/4
K:Bb
['c B3/2 G/(E/G/) B (F3/2 D/) B,E']  
X:1
L:1/8
M:2/4
K:Bb
 B,/D/ | F F/F/ GE | GF z (D/E/) | Fd cA | B2 z | c | B3/2 G/(E/G/) B | (F3/2 D/) B,E | DF CC | 
 B, z2 | c | B3/2 G/(E/G/) B | (F3/2 D/) B,E | DF CC | B,2 z ||  