Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/8
M:4/4
K:C
['GABG EFGE ABcA FGAF GBdg', 'G2 (Bc) dedc BcdB (3efg ed cdef']  
X:1
L:1/8
M:4/4
K:C
[M:2/2][K:G] .abc (3DEF | GABG EFGE | ABcA FGAF | GBdg ecAG | FGAF DEFD | GABG EFGE | ABcA FGAF | 
 GBdg ecAF | G2 GG G2 :: (Bc) | dedc BcdB | (3efg ed cdef | gfgd ecAG | FGAF DEFD | GABG EFGE | 
 ABcA FGAF | GBdg ecAF | G2 GG G2 :|  