Company Applied Voices LLC created these great apps:
HT Professional Recorder, uFlute - Native American Flute Simulator, TRUMPLET: Flute meets Trumpet, uListen - Sound Amplifier, uFlute Lite - Native American Flute Simulator, Egg A Sketch, Egg A Sketch PRO, HT Recorder for iPad, Paintball Palooza, TV Louder, and others..