Sarpado!

good use of pattern loops and the split pattern to change up the supporting notes while keeping the arpeggio going! and i like the detuned echo. there's plenty of space left too so i think this could be developed into a fuller track, whether that's with the drums or some other tonal parts

efficiency-wise the only thing that stands out to me is simply that it'd save space to use all D04 commands instead of D00, the 00 continues take up more memory

haunting! sounds like an RPG soundtrack