Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
Q:1/4=120
M:2/4
K:Bb
['BB/>B/ df f>d', 'Bc dd/d/ de (3(f/=e/f/) (3(g/f/_e/) dc B(f/>d/)']  
X:1
L:1/8
Q:1/4=120
M:2/4
K:Bb
"^Moderate." BB/>B/ df | f>d f(f/B/) |{d} cB (d/c/)(B/A/) | B2 z2 | BB/>B/ df | f>d fb | 
 f>f{g} f/e/{f}e/d/ |{d} c2 z2 | fg/a/{g} f>a |{g} f>=e fd | (3(c/=B/c/) (3(d/c/_B/) AG | F2 z2 |]: 
 fc/c/ cf | e2 d>f | f>c cf |{f} e2 d2 | BB/B/ Bc | dd/d/ de | !fermata!f>d !fermata!ef | 
 (3(f/=e/f/) (3(g/f/_e/) dc | B(f/>d/) c(f/>e/) | d(f/>d/) c(f/>e/) | (3(d/c/B/) (3(g/f/e/) dc | 
 B2 z2 :|  