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  Select And Operate using Transform User Preset 21

Transform MIDI events defined in Transform User Preset 21.

Use MIDI transform sets in Logic Pro — Apple Support

Depending on your needs, it may be worthwhile to create your own transform sets. These can be configured and saved as part of a project. (Doing this in your template projects makes your transform sets available in all projects.) Your transform sets are shown at the bottom of the Presets pop-up menu.

  Select Auxiliary Channel Strips ⇧F

Selects all of the Auxiliary channel strips in the mixer window. Both versions of the documentation provided.

Channel strip types in Logic Pro — Apple Support

Aux (Auxiliary) channel strips: Used for a variety of signal-routing purposes. Aux channel strips are used to set up send returns, where a channel strip signal is routed to an aux channel strip for effects processing. They are also used for grouping and for distributing a signal to multiple destinations via sends.

Channel strip types — Logic Pro X Help

Aux (Auxiliary) channel strips: Used for a variety of signal-routing purposes. Aux channel strips are used to set up send returns, where a channel strip signal is routed to an aux channel strip for effects processing. They are also used for grouping and for distributing a signal to multiple destinations via sends.

  Clear Lane Set

Clears the current Lane Set.

Use Lane Sets in the Step Editor in Logic Pro — Apple Support

The Lane Set functions let you limit the Step Editor display to only the required MIDI event types. For example, imagine you have recorded a synthesizer lead MIDI region. You could create a Lane Set that contains individual lanes for each note pitch in the region. Drag each note event step vertically to adjust its level. Within the same Lane Set, you could create two more lanes to control the lead synthesizer’s filter cutoff and resonance parameters, allowing you to create or precisely edit filter changes.

  Note “B” J

Play the note B when the Musical Typing keyboard is open. “J” for a “B” makes no sense until you look at the Musical Typing window.

Use step input recording in Logic Pro — Apple Support

In Logic Pro, choose Window > Show Musical Typing.
The Musical Typing window appears, showing the layout of keys used for playing notes and changing controller information.

  Fix Displayed Note Positions and Durations

When MIDI regions are quantized it can have an effect on the notes as displayed in a score. The notes will be played according to the quantized rhythm, with the displayed notes representing things differently.

Swing (jazz performance style) — Wikipedia

In music, the term swing has two main uses. Colloquially, it is used to describe the propulsive quality or “feel” of a rhythm, especially when the music prompts a visceral response such as foot-tapping or head-nodding (see pulse). This sense can also be called “groove”.

Bret Pimentel explains things like this

Jazz swing notation — Bret Pimentel, woodwinds

Sometimes a well-meaning composer or arranger will try to approximate a jazz swing style notationally in this way:

Logic Pro Quantize region parameter — Apple Support

You can fix the display quantization of all MIDI events in the projects using the Score Editor’s Functions > Quantization > Fix displayed Note Positions and Fix displayed Note Positions and Durations commands. These commands may be useful for exporting projects (complete with display Quantize settings) to other notation programs that don’t feature display quantization. The commands are also available from the shortcut menu when you Control-click notes in the score.