Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/16
M:2/4
K:A
['B2 B2']  
X:1
L:1/16
M:2/4
K:A
 B2 B2 B2 B2 | d3 G A2 F2 | A8 | B2 B A F2 f A | B2 A F E3 D | E8 | E3 F E2 E F | A2 A2 B2 F2 | 
 C2 C2 E2 C2 | B,3 C B,4 | A2 A A A2 c2 | B6 c2 | A3 F E2 F2 | E8 |]  