Produce pleasing melodies that correspond with the indicated letter notation and incorporate the suggested theme.
X:1
L:1/8
M:4/4
K:Dmix
['AB c4 efga f2 (d2 d2) AB', 'F2 (D2']  
X:1
L:1/8
M:4/4
K:Dmix
|: AB | c4 efga | f2 (d2 d2) AB | c3 A B3 G | GFGB A2 AB | c4 efga | f2 (d2 d2) AB | c3 A B3 G |1 
 GF (D2 D2) AB :|2 GF D4 fg |: a3 f g3 e | fgfd c3 A | (B2 B2) BABd | B2 (A2 A2) fg | a3 f g3 e | 
 fgfd c3 A | cdcA GFGA |1 F2 (D2 D2) fg :|2 F2 (D2 D4) ||  