NOTE: A SoundFont (.sf2) is required to use this synthesizer. Plug your device to your computer, or hook a MIDI USB master keyboard via an OTG cable to play with this low-latency FluidSynth 2.1.7 based Synthesizer. - load SoundFont 2 - record your performances directly in WAVE files This application uses a modified version of FluidSynth, you can find the source code here https://github.com/VolcanoMobile/fluidsynth-android