Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
['', 'AF F2', 'dB B2']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
 dB |: AF F2 DFAF | AFDE FE E2 | AF F2 DFAF | E2 DE FDDB | AF F2 DFAF | AFDE FE E2 | AF F2 B2 AF | 
 E2 DE FD D2 :| d3 f abag | f2 ef dB B2 | dcdf abag | faeg fddc | dfaf gbag | faed dB B2 | 
 dfaf gbag | faeg fd d2 :|  