Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:2/4
K:Bb
['F D']  
X:1
L:1/8
M:2/4
K:Bb
 d>c | BB AA | GG F D F | D FD | FF F F/F/ | GG Bc | d(c/B/) c d | B>G AD/D/ | GG G G/A/ | 
 Bc/B/ AB/A/ | GG F D | FD FD | FF F F | GG Bc | d(c/B/) c d | B>G AD/D/ | GG G |]  