Inspired by Sound Ghost's Jumble plugin. Drop in a melody loop and hold a note.

I did a quick recreation of Sound Ghost's Jumble plugin inside Bitwig (made in 5.1.9). Inside a Chain is an Arpeggiator triggering a Sampler with random sync'd LFOs and a Delay+ and Reverb on the end of it. Drop a melodic loop into the Sampler and just hold down a note