# Parallel processing with MRatio 1. Start with "dry" track 2. Create aux track for parallel processing 3. Create summing track 4. Send dry track to summing track channels 1/2 5. Send aux track to summing track channels 3/4 (sidechain) 6. Add MRatio to summing track 7. Change crossfade mode to linear 8. Blend in ratio to taste [This video](https://www.youtube.com/watch?v=efP4-hiMOeQ) walks through it.