Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
M:4/4
K:C
['AB ce Bc/B/', 'ce Bc/B/']  
X:1
L:1/8
M:4/4
K:C
 BEA |[M:2/4][K:A]SOSOO .!fermata!PMTuCOME>F EC | EF/ AB | ce Bc/B/ | AF F/A/G/F/ | EF/ EC | 
 E>F AB | ce Bc/B/ | A>B A z :| ce e>c | df f z | ce Bc/B/ | AF FE | ce e>c | df f>g | af ge | 
 f2 f(f/g/) | af ge | f/g/f/e/ cB | ce Bc/B/ | AF F/A/G/F/ | EF/ EC | E>F AB | ce Bc/B/ | 
 A>B A z |]  