Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/8
M:2/4
K:D
['f2 ed', 'FA dc/d/']  
X:1
L:1/8
M:2/4
K:D
 FA Ag | f2 ed | Bc/d/ AF | GEEG | AF Fg | f2 ed | B/c/d AG | FD D2 :: FA dc/d/ | FA dc/d/ | 
 FA dc/d/ | eEEf/g/ | afge | fdec | dBAG | FD D2 :|  