MIDI and Sequencing

In a typical piano-roll editor, the note's vertical position selects its pitch and its horizontal position selects its start time. The length of the block sets the interval between its start and end instructions.

Draw C, E and G as three separate notes on an instrument track. Change only E to Eb. The phrase changes from outlining C major to outlining C minor while the sound source stays the same. Then restore E and change the instrument sound to compare a different kind of edit.

This separation saves guesswork. If a phrase has the wrong rhythm, changing the preset may distract you from the timing problem.

Velocity is a value sent with a note's start. The instrument decides how to respond: it might change loudness, brightness, the sample used or several properties together. A track fader changes the level of the resulting audio.

In MIDI 1.0, normal note-on velocities use values 1 through 127; a note-on value of 0 has a note-off meaning. Newer MIDI 2.0 messages support greater resolution, so the familiar range is not a limit of every MIDI system. DAW Basics shows the same difference between MIDI tracks and audio tracks.

Some drum samplers play a one-shot sample to its end once triggered. In that mode, shortening the MIDI note may not shorten the audible hit. A sustained synth patch is more likely to respond directly to the note's end, followed by its release stage.

Check the instrument's playback mode or envelope when the visible block length and the sound's length differ. Also check sustain-pedal data if keyboard notes continue after you expect them to stop.

Quantizing moves note timing toward a chosen grid. If you played straight eighth notes slightly unevenly, an eighth-note grid can help align them. The wrong grid can change the intended rhythm, such as pulling a triplet figure onto straight subdivisions.

Save the original phrase and compare before committing. If the program offers a strength control, try a partial correction as well as a full one. Precise timing is not inherently lifeless; choose the version that supports the groove.

Check whether the DAW receives incoming MIDI, then whether the track is sending it to the intended instrument. Note data alone produces no audio.

If the instrument's own keyboard makes sound but your controller does not, inspect the input, channel and monitoring settings. If neither makes sound, trace the instrument's audio output through the track and main output. DAW Basics provides a signal-path checklist.

Create a four-bar phrase and save a copy. In the first version, change only the rhythm. In the second, restore the rhythm and change only the instrument. In the third, keep both and reshape the accents.

Listen for which version solves the problem you actually had. This gives you a clear reason to edit the notes, the sound or the expression.