Select track 6 "Liverpool Bass" in the Track list.
You should see the window for EXS24 software synth opened to the "Liverpool Bass" patch.
Play some notes on your MIDI controller to hear the Liverpool bass.
Your MIDI controller may be in the wrong octave to play bass notes.
There is an Octave button on the Controller that will move the keyboard notes above or below middle C by octaves.
Change to the Upright Jazz Bass patch and play more notes.
Try other patches.
Continue with Lab13-7 StudioTightKit
Revised John Ellinger, January - September 2013