# Editing Tracks

Each track has an editor that can be opened using the Edit button located on the right-hand side of the track. In MIDI track, you can edit individual notes in the Pianoroll, Score, or Drum editors (see Editing Notes). The Controller Editor can be used to edit MIDI controllers such as Volume or Sustain.

### Common track editor buttons

Track editors feature the following buttons:

- UNDO: Undoes the last edit.
- REDO: Redoes an edit that was previously undone.
- EDIT: Opens an Edit Control window. This window allows you to apply volume changes, fades, etc., to the selected part. Edit Controls may offer different features depending on the editor.
- DELETE: Deletes the selected part.
- COPY: Copies the selected part to the clipboard.
- PASTE: Pastes from the clipboard into the editor. The clipboard data is placed at the current transport position (i.e., where the needle is).
- SEL ALL: Selects the entire track.

The MORE button offers:

- Cut: Copies the selected part to the clipboard and then deletes it.
- Merge Paste: Works like Paste, but does not delete existing data.
- Repeat: Repeats the selected part a specified number of times.
- Export: Saves the selected part to a new file.

### Moving audio or MIDI between tracks.

You can copy data to another track by dragging and dropping, or by using the clipboard functions. In either case, MultitrackStudio automatically converts between mono and stereo audio if needed. MIDI is also converted to audio and vice versa automatically.
MIDI to audio conversion uses a software instrument. This instrument appears in the Edit Control window of the receiving track.
Audio to MIDI conversion works only with monophonic audio (monophonic means only one note plays at a time). The accuracy of note recognition depends on the audio signal. Some manual editing is usually necessary to correct errors.

### Audio/MIDI Clips

Clip Shelf

Clips (pieces of audio or MIDI) can be stored on the Clip Shelf. The Clip Shelf appears when you click the Studio menu's Show Clip Shelf option.

You can drag audio or MIDI clips from track editors to the Clip Shelf and vice versa. Clips can be removed by dragging them to the Garbage Bin in the bottom-left corner of the main window.

### Dropping audio/MIDI files on track editors

Audio and MIDI files can be dragged from Finder to a track editor. Some plugins also allow you to drag audio or MIDI from their user interface into a track editor. The sample rate of audio files will be converted to match the song's sample rate if needed. "ACIDized" WAV files will be adjusted to match the song's tempo.

### Scrubbing

Track editors include a built-in "scrubber", allowing you to hear the part being selected. This helps you find the desired location, in addition to the visual clues in the editor. With tape recorders, this was done by moving the reels manually ("reel rocking"). Now it’s done by moving the mouse. The scrubber is active when moving the needle, selecting a new part, or resizing an existing selection.

With audio tracks, the speed and pitch of the scrubbing sound depend on the mouse movements. Spectral filtering is applied to prevent damage to speakers or ears from excessive high or sub-low frequencies.

This feature can be turned on or off in the Preferences window.