The top toolbar is what you will be using most of the time.
Tap the center of the screen to hide and show the toolbar.

The buttons are Songs menu, Go menu, Do menu, dB (keywords menu), CD/Music menu, Draw menu, Action menu button and Settings.
The bottom toolbar accesses the set list operations.
The buttons are: + button on the left, previous song, set list popup/chooser, next song and set list songs popup.