Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
M:4/4
K:C
['e f2 d', 'A2 g']  
X:1
L:1/8
M:4/4
K:C
 BEA ue2003 |[M:6/8][K:D]SOSOO .!fermata!PMTCO Md2 e f2 d | g2 e f2 d | d2 e fed | cec ABc | 
 d2 e f2 d | g2 e f2 d | fga gec | dAF D2 :: g | fed{d} c2 B | A2 A A2 g | fed c2 A | GEF G2 g | 
 fed cBA | AFG A2 g | fga ABc | dAF D2 :|  