Develop melodies utilizing the stated letter notation and the provided theme.
X:1
L:1/8
M:4/4
K:D
['dB B2', 'A2 fa a2']  
X:1
L:1/8
M:4/4
K:D
 DFed B3 c | dB B2 dBAF | DFed (3BcB Ad | fdec dBAF | DB B2 dB B2 | DB B2 dBAF | (3ABA FB ABde | 
 fdec dB A2 || fa a2 fdde | fdad BA A2 | fa a2 bfaf |1 egfe dB A2 :|2 egfe dBAF ||  