Craft a musical work adhering to the specified theme and structure.
X:1
L:1/8
M:2/2
K:Amix
['e2 ef'  
X:1
L:1/8
M:2/2
K:Amix
"A" a4"G" g4 |"A" efed c2 cd |"A" e2 ef gaba |"Em" g2 e2 e2 c2 |"A" a4"G" g4 |"A" efed c2 cd | 
"A" e2 ef"Em" gfed |"A" c2 A2 A4 ::[K:Amin]"Am" ABcA"G" BAGB |"Am" ABAG"Em" E2 EG | 
"Am" A2 B2 c2 d2 |"Em" e2 ef edcB |"Am" ABcA"G" BAGB |"Am" ABAG"Em" E2 EG |"Am" cBAc"G" BAGB | 
"Am" A4 A4 :|"^A-Part Variation (meas. 3-4)""A" e2 ef gaba |"E" ^g2 e2 e2 c2 | 
"^B2 Altertnate Final Measure""A" A2 ^cd e^f (3(gfe) |]  