definitions

A Pattern is a small group of notes played in an order you can repeat.

A Note is the musical pitch you hear when you play a key.

A Virtual Instrument is the sound being played, such as piano, synth, bass, or strings.

Rhythm refers to when the notes happen around the beat.

A Piano Roll or Visual Notes is where the DAW shows the notes you played, when they happened, and how long they lasted.

MIDI is the controller that sends note information to the digital instrument.

Pitch refers to how notes can sound higher or lower.

A Beat is the steady pulse you follow.

Recording is capturing the MIDI notes so they can be played back and changed.

C Major is the musical environment you are using; it starts with five notes from C major rather than teaching the full scale.

A Key is the physical key you press on the MIDI keyboard.