TBH Beethoven didn’t have a symphonic algorithm and that’s why he was so badass. He went against the grain and broke the “rules” in traditional classical symphonic form which helped usher in the romantic period. Oh wait… we are supposed to modulate back to the Tonic major key??? Fuck you says Beethoven! Let’s add in a solo and bring it back into minor with a big ass brass sound. Come on T-bones, you can join the orchestra too. What a fuckin legend.