The real question here is what do you consider loops?

Thanx to Tangmo I recalled Acid Planet and my feeble attempt at using acid audio loops. I found acid type audio loops very limiting. I still do today. The only acid type audio loops I use today are percussion loops like shakers, tambourines, and occasionally drums.

BUT a lot of string instrument software uses loops. For instance a number of guitar strumming programs use loops, i.e. press a key or two and get a guitar strumming said chord.

https://www.applied-acoustics.com/strum-gs-2/library/

https://realitone.com/products/realibanjo

https://www.kirkhunterstudios.com/products/kinetic-string-motion-engine/

and NI Session Guitars just to name a few. Plus you can save either the audio and/or the MIDI output on many of these.

How about MIDI drum loops? There are a ton of them out there. Plus there are MIDI loops for a lot of instruments available from a number of companies.

So when we are talking loops we must specify exactly what kind of loops we are talking about. In fact I call RTs intelligent loops, both the audio and the MIDI side of them.

YMMV

Why is it that doctors call what they do 'practice'?
If flying is so safe, why do they call the airport, the terminal?

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware