Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
M:2/2
K:D
['d F3 A2 FA dfec dAFA', 'gfed B e3 gfed Beba agfe f']  
X:1
L:1/8
M:2/2
K:D
|: d F3 A2 FA | dfec dAFA | B G3 Bcde | f2 ec dcBc | d F3 A2 FA | dfec dAFA | G3 A Bdeg |1 
 fdec Adfe :|2 fdec Adde |: faa^g afdf | bagf gfed | B e3 gfed | Beba agfe | f a3 fade | 
 fedc dcBA | G3 A Bdeg |1 fdec Adde :|  