GarageBand is a featured app because it is easy to use, fun, and powerful. Plays keyboards, drums, and guitars with enhanced effects not available on real instruments . Pre-installed loops and smart instruments can add a professional touch. Record external audio thorough the built in microphone or attach an external microphone. Accommodates up to eight audio tracks. Export your finished audio to iTunes or send via e-mail. GarageBand is a paid app that works on an iPhone, iPod Touch, and iPad.