Create INFINITE FREEZE DRONES on Helix and HX Stomp - STEP BY STEP GUIDE EHX FREEZE - YouTube
Alternative to EHX Freeze? | The Gear Page
Electro-Harmonix Freeze Sound Retainer | Reverb
What is a simple synth that you could plug into a guitar amp that could create backing track drones while you play along? Instead of having to use one of these pedals :