For some reason, I am terrified of arpeggios. I suspect this started back in the 1960s when I was taking piano lessons. They were the Weird Chord Things, totally unlike the solid and broken triad chords, and seemed so much harder that My brain just froze and never did thaw out.
It's telling that I can whip off a C# minor harmonic scale, 2 octaves, on piano and clarinet, from memory. Show Me a C major arpeggio and plunk the sheet music right in front of Me, and My brain just goes "Uh... no. Not doing that."
This is something up with which I will not put. Stay tuned for Springy G Versus the Arpeggios from Hell.