Vortex Sound Research

Hi! So I took piano lessons when I was seven, and now I'm in a band, which is amazing, but I feel very amateur compared to a lot of the bands we play with, especially with synth pros.

I've got a Roland go:keys and I'm spending a lot of time with it creating sounds and I've ended up leaning towards really synth pop vibe for the music, which means I need to up my game.

I love the FX/guitar sounds I've found, and I want to combine them all together so I can layer and layer and bring in lots of depth and background effects to the band.

With Roland go:keys, I can record one sound, and play another on top, but I want to do more than that, multiple sounds.

What do I need for this?

Thanks for your time and thoughts.