Slot Rack
The Slot Rack has 16 slots. Each slot can hold a program, that is, you can work with 16 programs at the same time.
Each slot has a Mute button and a Solo button. You can mute and solo several programs at the same time. The slot number to the left of the slot lights up if incoming MIDI data is detected.
![](../../../_shared_picts/picts/halion_sonic_se/managing_sounds/slot_rack.png)
Once a program is loaded in the Slot Rack, it can be played and edited.