Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/4
M:2/2
K:A
['A B c']  
X:1
L:1/4
M:2/2
K:A
 c B A | F2 F2- | F A B c | E2 E2- | E A B c | e2 e2- | e d c B | c2 c2- | c c B A | F2 F2- | 
 F A B c | E2 E2- | E A B c | e2 e2- | e d c B | A4- | A |]  