SF2Instrument ins = new SF2Instrument(sf2);
ins.setPatch(new Patch(0,0));
ins.setName("test instrument");
sf2.addInstrument(ins);
SF2InstrumentRegion insregion = new SF2InstrumentRegion();
insregion.setLayer(layer);
ins.getRegions().add(insregion);
// Load the test soundbank into the synthesizer
synth.unloadAllInstruments(synth.getDefaultSoundbank());
synth.loadAllInstruments(sf2);