Tracks Menu: Add New
Mono Track Ctrl + Shift + N Extra
Creates a new, empty mono audio track. This command is rarely needed, since importing, recording and mixing automatically create new tracks as needed. But you can use this to cut or copy data from an existing track and paste it into an empty track.
Creates a new, empty Label Track. When a label track has the yellow focus border you can create a label just by typing. Labels can be used for textual annotation and are commonly used when exporting multiple files from a single track.
Creates a Time Track that can progressively increase or decrease playback speed (and pitch) of all audio tracks in the project. The range of possible speed warp is set in the Set Range (upper and lower) option in the Time Track dropdown menu to left of the track. The amount of and direction of warping within that range is controlled using Envelope Tool.