*** ATTENTION! ***1. String Ensemble is a *SOUND PLUGIN* for another app called Functional Ear Trainer. It's not a stand-alone application!!! Install FET first:https://play.google.com/store/apps/details?id=com.kaizen9.fet.android2. Moreover you need to have an in-app purchase "Sound Plugins" to enable them.To activate String Ensemble:0. Install it.1. Run Functional Ear Trainer.2. Click on the "gear" icon in the Main Menu.3. Choose "String Ensemble" under the "Sounds" setting.🎶 Enjoy! :)