Playback is quantised, so triggered cells wait for the next specified beat or bar division before taking over from the currently playing loop individual cells can be set to retrigger when clicked, or trigger only when ‘held’ with the mouse and various ‘start behaviour’ options allow for launch timing variation. The relationship is bi-directional, so you can also drag clips out of the Tracks View into the Grid. The idea is to jam around with drum loop variations on one track, bass loops on another, etc, to create an on-the-fly arrangement, optionally recording your ‘performance’ directly into the Tracks View, where it can be edited and finessed as usual.
The Live Loops Grid is an alternative - but interlinked and, yes, simultaneously visible - interface to the regular Tracks View, hosting multiple tempo-synced audio or MIDI loops in ’cells’ on each track, one of which can be played back at a time. A potentially huge deal for those dance and electronic producers who have long found themselves torn between the supremely deep but resolutely linear workflow of Logic and the arguably less high-spec but inspiringly freeform tech-jazzery of Ableton Live, Live Loops brings the majority of the latter’s Session View functionality to the former.