Soft Synth TTS-1

What are the "test samples" and where did you find them?
Like all DX and VST instruments, TTS-1 requires MIDI data to make it play.
Set up a MIDI track with it's output set to TTS-1, set channel, bank and patch. Enter data (notes) in the MIDI track by recording directly from a MIDI keyboard or controller, or mousing the notes into the track in either the Staff view or Piano Roll view (PRV).
The sound of TTS-1 is not recorded. To permanently render the sound to audio, you need to Bounce the synth to an audio track.