Create music based on the specified alphabetic description of the musical arrangement and the given pattern.
X:1
L:1/8
M:2/4
K:A
['A F']  
X:1
L:1/8
M:2/4
K:A
 B B2 e | c B A2 | A B A F | E3 F | A A A A/ B/ | c e c B | A B A F | E4 | e2 c2 | B e2 B | 
 c2 E F | A4 | c B2 A | E F A A | F E C B, | A,4 | A3/2 F/ E F | A4 | c B2 A | E F A A | F E C B, | 
 A,4 |]  