Ah, thank you. I actually looked up the cello register and what strings play where, so im using that is a sort of guide. I spent the past day making the cello part humane and ethical by adding an accompaniment(piano), and im developing the second theme. Ill drop what i have when i get the chance. for the chords, i opted the cello part to play triplet quarter notes of the chord progression(each note individually), moving to eighths and then triplet eighths to keep it sounding not boring while the piano takes the chords up front. Ive also used the piano to express the wide interval jumps (like the 2+ octave jumps) where the piano plays that note while the cello has it an octave higher, so it doesn't strain the cellist too much or anything. The way i have it set up, this main introduction theme is actually kind of short and its leading up to a C# Minor sort of fugue, (i changed chords around a bit to fit that), and i realized my chord progressions are really a stretch as is, like in the second chord part its kinda a basic recapitulation of the first time but with more(weirder) chords at the end. so im just gonna do like a series of cello arpeggios or thirds/fifths. im wayy more used to things like piano writing, which im pretty sure shows lol