[Ensemble] options are displayed when you select [Ensemble] from the [Select Group ] combo box in the [Instrument] dialog box. You will see the selected instrument in the [ Instrument ] window.

Ensemble Strings This is a sound of orchestra strings. Slow Attack Strings This is a sound of slow attack strings. Synth Strings 1 This is a sound of synthesizer strings. Synth Strings 2 This is a sound of synthesizer strings. Choir Aahs This is a chorus of "Ah". Choir Oohs This is a chorus of "Uh". Synth Vox This is a sound of synthesizer Vox. Orchestra Hit This is a sound of orchestra hit.