Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:4/4
K:A
['B/B/B f2', 'B/B/B f2']  
X:1
L:1/8
M:4/4
K:A
 uf | ve>vAuc>uA B/B/B f2 | ve>vAuc>uA ve>uAe<c | d>fe>c B/B/B f2 | e>cA>c e3 :| uf | 
 ve>vcua>c B/B/B f2 | ve<uc va>uc e>c e<f | e>c a>c B/B/B f2 | e>cA>c e3 f | e>ca>c B/B/B f2 | 
 e>ca>c e>fa>b | a/g/f/e/ a>c B/B/B f2 | e>cA>c e3 |]  