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:D
['f3 d e3 A']  
X:1
L:1/8
M:4/4
K:D
 f3 d e3 A | defd eAAA | f3 d e3 A | ABce !fermata!d3 e | f3 d e3 A | defd eAAA | cdBc AG E2 | 
 ABce d3 e | dBcA dBcA | FGAB A3 d | dBcA dBcA | decA d3 e | dBcB dBcA | FGAB AFGA | GABG ABcd | 
 ecBA d4 | FAGE FD D2 | dcBe A3 G | FAGE FDDD | GFED E3 A | FAGE FD D2 | dcBc A2 Bc | dcBA dFGE | 
 AGEA D2 z2 | GFED EA, A,2 | GFEF G3 A | GFED EA,A,A, | FDEA D3 E | GFED EA, A,2 | GFEF G3 A | 
 cdBc AG E2 | ABce d3 e |]  