Opens the Settings menu.

Starts playback. Pressing again stops playback.

Stops playback and resets the play marker to the first beat.

Records in the Arranger.

Toggles the metronome on or off. The metronome volume level can be adjusted in the Settings.

Unlike the normal Play button, this does not start playback from a fixed start marker position. It continues playback from the current position.

Momentary Play: sends the normal Play command only while you hold the button down.

Momentary Continue Play: sends Continue Play only while you hold the button down.

Shows the current BPM value. Pressing it opens a fader for setting the BPM. If "Auto-Rounding up" is enabled in the Settings menu, the fader can be forced to move in 1 BPM steps without decimal values.

Shows the current time signature. Pressing it opens a dropdown menu for changing the time signature. Note: for touch control, the BPM touch area is slightly more dominant because it is used more often. The time signature touch area is slightly lower than the display suggests. Fun fact: changes to the numerator directly affect the number of Looper beat count LED elements.

These arrow buttons decrease or increase the BPM in 0.5 BPM steps.

Lets you set the tempo (BPM) by tapping the button regularly.

They show the current timeline beat count and time status.

Turns the transport/timeline loop (repeat) function on or off.

Turns MIDI overdub on or off for playing Launcher clips.

Asks Sternenherz Extension to resend the current Bitwig MIDI-related state to the UI, updating all widgets in the UI that receive MIDI data.

Performs a full OSC data refresh and requests the current values from Bitwig. This can take a few seconds to complete.

When enabled, all clips inside the current controller rectangle are scanned to determine their length. Based on that length, the Clip Launcher can show playback progress for each clip if "Show Clip Playback Progress" is enabled in Settings. By default, "Cliplength Scan on Selection" is also enabled, which scans a clip's length whenever it is selected. An additional option, "Cliplength Scan on Startup", can scan all clips automatically when Sternenherz UI/Looper starts.

When active, indicated by the green color, the Clip Launcher is in Launch/Record mode. Clicking or tapping existing clips starts their playback. For empty clip slots, recording starts in that slot; pressing again stops the recording.

In this mode, the Clip Launcher only selects clips or empty clip slots.

In this mode, the Clip Launcher only deletes clips.

Shows the launch quantization currently set in Bitwig. Pressing the button opens a dropdown menu where the launch quantization can be adjusted.

Pressing the buttons or sliding the fader below them adjusts the clip length for new recordings. Available settings range from 1 bar to 2, 3, 4, 6, 8, 12, 16, and 32 bars. This setting affects all Clip Launcher recordings in Bitwig, including MIDI recordings. The Looper also uses this setting in its Fixed and Overdub modes.

Same as the buttons/fader, but offers more adjustment options, starting from 0.25 bars and above.

Undo and Redo for Bitwig.

Duplicates all clips from a specific scene within the chosen Looper group into the next scene. Requires selecting any clip inside a Looper group; otherwise, the program does not know which Looper group you want to copy.

In this Looper mode, the main Looper button starts recording without a time limit. Pressing the main Looper button a second time is required to stop the recording.

In this Looper mode, the main Looper button starts recording with the bar-count limit currently active in the Fixed Cliplength Settings. Pressing the main Looper button a second time is not required; recording ends automatically after the configured number of bars has elapsed.

In this Looper mode, the main Looper button starts recording with the bar-count limit currently active in the Fixed Cliplength Settings. The Looper automatically records overdubs this way until the Looper group is full; up to 5 overdub clips can be recorded in total. To cancel the process, press the main Looper button a second time.

In this Looper mode, the main Looper button starts recording without a time limit. Pressing the main Looper button a second time is required to stop the recording. The length of the resulting recording automatically updates the bar setting of the Fixed Cliplength Settings, and the Looper switches to Fixed Length mode. The next time the main Looper button is pressed, it uses this new fixed clip length and starts a fixed-length recording. In other words: the first recording sets the clip length for all following recordings.

In this Looper mode, the main Looper button starts recording without a time limit. Pressing the main Looper button a second time is required to stop the recording. The length of the resulting recording automatically updates the bar setting of the Fixed Cliplength Settings, and the Looper switches to Overdub mode. The next time the main Looper button is pressed, it uses this new fixed clip length and starts automatic overdub recordings with that length. In other words: the first recording sets the clip length for all following recordings. Note: after ending the first Free recording and before the fully automatic overdub recording begins, the Looper waits until the first recording has played through once completely.

Mutes or unmutes the monitoring track of the Looper template inside Bitwig, which listens to the IN track, meaning the track that feeds the Looper groups. Usually this means that all monitoring for the microphones from the IN1 and IN2 tracks, and the MIDI instrument from the MIDI IN track, will be turned on or off.

Mutes/unmutes the microphone input tracks.

The track-selection buttons make it possible to select tracks in Bitwig. If a track is a group track, it has an additional colored stripe on its left side in the group color, spanning all child tracks. The white symbol on group tracks can also fold or unfold the group.

Controls Bitwig's volume fader for the track.

The knobs control Bitwig's send volume. The FX button resets all send knobs of that track to 0.

Turns record arm on or off for that track. For group tracks, Recarm is greyed out, just like in Bitwig.

Turns Solo on or off for that track. For group tracks, the S symbol has an additional circle around it to distinguish it from normal tracks.

Turns Mute on or off for that track. For group tracks, the M symbol has an additional circle around it to distinguish it from normal tracks.

Stops any currently running Clip Launcher clip inside that track. For group tracks, the Stop symbol has an additional circle inside it to distinguish it from normal tracks. The number in the middle of the Stop symbol is the track number in the overall context of the Bitwig project. Fun fact: the real track numbering is something Bitwig does not show in its own UI.

Simple VU meters for each track. VU meter colorization is not very precise, internally using raw thresholds of 0-90 for green, above 90 for orange, and above 125 for red on a 0-127 meter scale.

Starts the respective scene. In the horizontal Clip Launcher, where tracks are displayed above one another, the Scene Launch Buttons are positioned above all clips, just like in Bitwig. In the vertical Clip Launcher layout, which is only available in the larger Looper versions, the Scene Launch Buttons are arranged to the left of the clip rows, also matching Bitwig's layout.

Mirrors Bitwig's Clip Launcher, showing existing clips with colors and tiny names. Names can be deactivated in the Settings. Slots can also show a playback or record symbol, and even clip playback progress. Clip playback progress is only available in the bigger Looper versions. The currently selected clip has a white outline. Group clip slots have diagonal lines on them and can show the tracks they contain as color layers if the tracks in the group have different colors. Clip Launcher modes determine what happens when you press clips. The default is Cliplauncher Mode 1, Launch and Record. Alternatives are Mode 2, Select, for selecting clips, Mode 3, Delete, for deleting clips, and Mode 4, Create, for creating empty clips, which is particularly useful when working with MIDI.

Appears when holding down a clip slot. Holding the mouse or finger on any clip slot opens additional functions. For empty clip slots, it provides access to the Insert from Library shortcut, which opens the Browser. For existing clips, the additional functions consist of 4 arrow buttons for dragging and moving the clip to another clip slot, a Duplicate function for copying and moving the clip, Duplicate Alias, and Delete.

With this button, you can choose which scene, from 1 to 3, the respective Looper records into. It also determines the responsibility area of the Quick-Delete buttons. The currently selected scene is shown not only as a number next to the button, but also as an orange outline around the corresponding clips in the Clip Launcher. The thickness of this outline can be reduced in the Settings. For the large Clip Launcher, the orange outline can also be disabled completely.

Locks or unlocks the Quick-Delete buttons below to prevent accidental quick deletion. Unlocked by default.

Offer a way to instantly delete clips of the currently selected Looper group or scene, chosen via the Scene Selection button, which is visualized with orange outlines around the clips. Group track buttons have an additional circle around their X symbol and delete all clips inside that group. For Looper groups, these Big Delete Buttons therefore equal the typical Clear Looper functionality.

Determines how many clips the respective Looper records before it is considered full. The default value is 5, matching the five tracks of the Looper group. This is useful, for example, when using automatic Overdub mode and you know that you only want to record three overdubs before the Looper switches into playback mode. Important: Overdub Amount settings are shared across scenes, meaning it is not possible to set a different value for scene 1 than for scene 2. This has to be adjusted manually depending on the scene selected with the Scene Selection button.

Click to select the Looper. This turns record arm on for all Looper tracks. This optional selection method is not required for audio looping, because using the main Looper button auto-rearms all Looper tracks anyway.

Triggers the main function of the Looper. Depending on the selected Looper mode, such as Free, Fixed, or Overdub, this can start recording and stop recording. When the Looper is full, meaning it has no free clip slots left for recording, the Main Looper Button only acts as a playback button.

The button provides two kinds of visual feedback: the inner symbol and its color, and the color of the outer ring.

The center symbol reflects what the button will do next:

• Gray record when recording is possible.
• Gray overdub outline when overdub is possible but no clip exists yet.
• Gray queued record or overdub outline variants when recording is queued.
• Green play when the Looper is effectively full and the main button will behave like group playback.
• Red record when normal recording is active.
• Orange overdub when overdub recording is active.

The inner main-button ring changes by Looper group state:

• Gray when no clip exists in the selected Looper scene.
• Clip color composite ring when clips exist but none are currently recording or playing.
• Green when clips are playing.
• Red when a clip is recording.
• Orange when overdub recording is active.

The number in the center is the current Bitwig beat count, which is also reflected by the illuminated LED segments. Setting a numerator other than 4 in the time signature directly affects this visualization. In the Settings, the beat-count animation can be changed from stepwise LED lighting to continuous growth.

The circular LED beat ring changes color according to the currently active Looper mode:

• Free: white.
• Fixed: purple.
• Overdub: orange.
• Free into Fixed: white-to-purple gradient per active segment.
• Free into Overdub: white-to-orange gradient per active segment.

Stops playback of the whole Looper, meaning the Looper group.

Starts playback of the whole Looper, meaning the Looper group. Depends on the currently selected scene via the Scene Selection button.