One-loop-at-a-time looper with overdub/undo/redo. When loop is playing, queing the other loop to play record lets the current loop cycle finish before performing the queued action.

Each loop’s main actions can be performed with one button (or midi binding): record, play, overdub.

For loops that are quantized to full measures and can be synched with other devices, see the “groove” edition: https://patchstorage.com/rc500-esque-groove-edition/