Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/4
M:3/4
K:Bb
['c d']  
X:1
L:1/4
M:3/4
K:Bb
 F | B A G | c d c | B F z | z2 F | B2 G | c2 d | B F z | z2 F | d d d e | d2 z B | c d e d | 
 c2 z | B | A c c d/d/ | c2 B c | d e d c | B2 z |]  