Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:2/2
K:D
['f a2']  
X:1
L:1/8
M:2/2
K:D
 (3ABc |"D" d2 B2 A2 F2 | ABAF E D3 | dc d2"A" edeg |"D" f d3"A" e2 (3ABc |"D" d2 B2 A2 F2 | 
 ABAF E D3 | dc d2"A" edeg |1"D" fd- d2 d2 :|2"D" fd- d2 d2 A2 |]:"D" f a2 f a2 fa | b2 a2 fede | 
 f2 a2 fede | fedf"A" edBA |"D" f a2 f a2 fa | b2 a2 fede | fedB"A" ABdf |"D" e d3 d4 :|  