Slice at Transient Markers

I have never edited a drum track or any other instrument to get things “on the beat”. It always looks so hard, or at least tedious, in other DAWs. This looks like it should be the simplest thing to do…

Flex Time algorithms and parameters in Logic Pro — Apple Support

Slicing cuts the audio material at transient markers, then shifts the audio while playing each slice at its original speed. No time compression or expansion is applied to the shifted audio. Any gaps that occur as a result of shifting the audio can be filled using the decay function. Slicing is a good choice for drums and percussion and comes with the following parameters:

  Randomize Current Edit Mode Values for All Rows    ⇧⌘R

The Step Sequencer is, essentially, a new application for Logic Pro X. Lots to learn. Back to the 1990s for my sequencing days…

Edit Step Sequencer steps in Logic Pro — Apple Support

You can edit individual steps in several ways, including cutting, copying, and pasting steps. You can also repeat a step, decrement or increment the values of all steps in a row, transpose all steps in a pattern by semitones or octaves, randomize values for all steps in a row or all steps in the pattern, and reset steps to default values.

Edit Step Sequencer rows in Logic Pro — Apple Support

You can edit Step Sequencer rows in a variety of ways, including copying and pasting rows or row settings, duplicating a row with the next row assignment, changing the row assignment, resetting row values to a default setting, and deleting a row.

Modify Step Sequencer pattern playback in Logic Pro — Apple Support

Some options in Step Sequencer control how and when steps play back, and can be fun to manipulate while the pattern is playing. For example, you can mute and solo rows, rotate rows (moving all steps in a row left or right, including their step values and other edit mode settings), and change the playback mode for the pattern or for a row, and perform other actions while the pattern is playing. In addition to controls and menu items, Step Sequencer includes a collection of key commands to facilitate making these and other changes in real time, see Step Sequencer key commands.

  Set Nudge Value to 5 SMPTE Frame

Sets the nudge value to 5 SMPTE frames (approximately one sixth of a second). Synchronizing audio with video is not a typical task for me, but it is good to know that the alignment tasks can be helped with _mouse free_ editing commands.

Set the nudge value, use the nudge commands while looking and listening.

Move regions in the Logic Pro Tracks area — Apple Support

You can nudge regions (move them in small increments) left or right using key commands. To nudge regions, you first set the nudge value, then move selected regions by this value. Alternatively, you can nudge regions by a set value.