I can also think in images and internal visualizations. Geometric reasoning is also a thing. Musicians can also hear things in their mind - some can write it do

I can also think in images and internal visualizations. Geometric reasoning is also a thing. Musicians can also hear things in their mind - some can write it down, others can play it directly, and in my case I'm not good enough to get it out of my head! In all cases though these thoughts are kind of tied to representations from the real world. Sort of like other languages via different senses. So yeah, how abstract can our thoughts actually be?