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== MIDI ==
Like audio, DAW's feature MIDI tracks and events. MIDI events are blocks of classical musical notation, with each note being described by pitch, duration, and velocity. Additional data such as pitch bend or modulation can also be recorded.
MIDI input is often assisted by a piece of hardware called a MIDI controller. This typically has at least a small keyboard and pitch and mod wheels. It may also include vertical sliders, drum pads, knobs, a ribbon controller, a touchpad, or other specialized controls.
MIDI events can be recorded from a midi controller (or the compuer keyboard acting like a keyboard (although this approach will not capture note velocity)).
MIDI can also be edited directly inside the DAW's (or an external) MIDI editor software. This typically appears as classical musical notation with a 5-line staff and a clef and the notes taking whole, half, quarter, etc. form. It can also appear as a ''piano roll'' grid where the y axis appears like a piano keyboard turned sideways. Each row corresponds to a specific note and each column is a unit of time. Notes appear as rectangular blocks (similar to events in the DAW workspace), whose length indicates the note duration. There may also be a specialized piano roll for drum editing, where notes appear as small diamonds, since duration is meaningless. Below the grid is often a small view for ''velocity'', representing how strongly each note is struck. Click dragging is used to select multiple notes, which can then have their pitch, timeline location, duration, and velocity altered at the same time.
== Automation ==