The Ultrabeat user interface is divided into three main sections.
Assignment section: Displays all drum sounds in a drum kit. You can select, name, and organize drum sounds here. This section also includes a small mixer, used to adjust the level and pan position of each sound. See Ultrabeat Assignment section overview.
Synthesizer section: Used to create and shape individual drum sounds. The parameters of the drum sound selected in the Assignment section are displayed in the Synthesizer section. See Ultrabeat Synthesizer section overview.
Step sequencer: Used to create and control sequences and patterns. A sequence triggers a single drum sound, and can consist of up to 32 steps. A pattern contains the sequences for all 25 sounds. You can trigger and control sounds with the step sequencer in place of—or in addition to—MIDI notes entering Ultrabeat from Logic Pro X or keyboard. See Ultrabeat step sequencer overview.