Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
M:4/4
K:C
['[M:2/2][K:G] e ece eg f ue D', 'cdef g2']  
X:1
L:1/8
M:4/4
K:C
[M:2/2][K:G] e ece eg f ue D b uea ce eO Mve .gg ea a D da becaue f e acceed c' eecd!p! a[Q:1/8=180]"^D modal" .dcAG (3EFG DE | 
 G2 AG EG G2 | dcAG (3EFG DG |1 Addc defe :|2 Addc d2 d2 || cdef g2 fg | agef g2 ed | cdef g2 ag | 
 addc dfed | cdef g2 fg | (3agf ef g2 fg | afge fdec | d2 dc defe |"^final" d8 |]  