Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:4/4
K:A
['B/B/B fB{d}', 'cf f2 defa ec{d}cB A3 B']  
X:1
L:1/8
M:4/4
K:A
|: A,B, | CF F2{d} BAFA | ceef ecAc | B/B/B fB{d} cBfB | B/B/B fB{d} cBAE | FA{d}cA{d} BAFA | 
 cAef ecAc | B/B/B fB{d} cAec |{d} BAGE F2 :: AB | cf f2 defa | ec{d}cB A3 B | ceef ecAB | 
 cB{d}BA GBEB | cf f2 defa | ec{d}cB A3 B | ceag fecA |{d} BAGE F2 :|  