BackTrax supports the creation of multiple libraries, if you would like to keep separate tracks and set lists for different bands or performance situations.
At the top of the BackTrax Library panel there is a label for the current library. The default library is initially called “Main Library”, as shown in the following screenshot.
Tapping on that label presents a list of all of your libraries, followed by options for creating and modifying the current library. Tap on the name of any library in the list to switch to that library, and all of the library contents and saved set lists will change to show the ones in the new current library. The current set list will be cleared, but the current playing song will remain so you can switch libraries during playback.
To delete any song from the current library, simply swipe left on the song in the library panel to reveal a delete button.