Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
Q:1/8=120
M:6/8
K:A
['z F2', 'F2 z']  
X:1
L:1/8
Q:1/8=120
M:6/8
K:A
"^thirdo,read as bass clef" z | F2 F F2 F | F2 z F2 z | F2 F F2 F | dcc c2 z | F2 z F2 z | 
 F2 z F2 z | A2 z B2 z | FFF F2 :: F2 z c2 z | f2 z F2 z | f2 z f2 z | c2 z c2 z | F2 z F2 z | 
 F2 z F2 z | F2 z G2 z | c2 z c2 z :|  