GarageBand for iPad

Partial version - Free/Full Version - $4.99 - An iPad version of the Mac DAW(Digital Audio Workstation), GarageBand turns your device into a collection of Touch Instruments and a recording studio. Incorporates "Smart Instruments" - Piano, organ, guitar, and drums. Plug an electric guitar into your device to use digital versions of classic amps and stompbox effects. Use a Touch Instrument, built-in microphone, or guitar to record a performance. Supports up to 32 tracks. Additional sounds available with a one-time in-app purchase or record popular third-party music apps using Inter-App Audio. Share your song using email, Facebook, YouTube, SoundCloud, or AirDrop for iOS.

MadPadHD

$2.99 - Sample any sound into a percussive instrument, or use the presets to "tap" and play. A sampling instrument at your fingertips. Create the craziest sounds and use them in your own beats and loops!

Staff Wars

$0.99 - Created by Cresskill High School alumnus Craig Gonci, Staff Wars brings learning notes and video games together. Works in treble, bass and alto clef. Levels, difficulty, and speed changes as you progress. Congrats to Craig on developing such a great learning tool!

Tenuto

$3.99 - from the makers of "musictheory.net", this app gives you drills/exercises that test you on information from "Theory Lessons", from basic note reading to chordal analysis.

Theory Lessons

$2.99 - from the makers of "musictheory.net", this app gives you music lessons from basic note reading to chordal analysis.