Set Row Playback Mode to Ping Pong ⌃P
Play the pattern from left to right, then right to left.
Modify Step Sequencer pattern playback in Logic Pro — Apple Support
Ping-Pong: Playback alternates between left to right and right to left.
learning at the elbow of the internet
text is a tough way to do audio — ⇧ SHIFT — ⌃ CONTROL — ⌥ OPTION — ⌘ COMMAND
