Craft melodious tunes in accordance with the outlined letter representation and the provided thematic element.
X:1
L:1/8
M:2/2
K:D
['Acde fdfd', 'g2 eg f2 df']  
X:1
L:1/8
M:2/2
K:D
 Acde fdfd | cdef gece | Acde fdfd |1 cdec d2 B2 :|2 cdec defg |: a2 ag f2 d2 | cdef gefg | 
 abag f2 d2 |1 cdec defg :|2 cdec d2 f2 |: g2 eg f2 df | edcB Acef | g2 eg f2 df |1 efec d2 f2 :|2 
 egfe d2 B2 ||  