Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/8
M:4/4
K:Emin
['e2 a2 abag']  
X:1
L:1/8
M:4/4
K:Emin
|:"Am" e2 a2 abag | e2 a2 abag |"Em" edef gfgf |1,3 edef gfgf :|2,4"Am" edcB A4 :: 
"Am" A2 Ac"Em" BAGB |"Am" ABAG E2 EG |1,3"Am" AGAB c2 d2 |"Em" e3 =f e4 :|2,4"Am" cBAc"G" BA G2 | 
"Am" A3 B A4 :|  