Audiobus: Use your music apps together.
What is Audiobus? — Audiobus is an award-winning music app for iPhone and iPad which lets you use your other music apps together. Chain effects on your favourite synth, run the output of apps or Audio Units into an app like GarageBand or Loopy, or select a different audio interface output for each app. Route MIDI between apps — drive a synth from a MIDI sequencer, or add an arpeggiator to your MIDI keyboard — or sync with your external MIDI gear. And control your entire setup from a MIDI controller.
Download on the App StoreAudiobus is the app that makes the rest of your setup better.
Palette Primary Colors - Great Freebie Orchestra for Full Kontakt Owners
This is one of the best freebies I've ever seen. A full orchestra with long and short articulations for strings, winds, and brass. And it sounds really good! You can even play more than one at the same time!
Get it HERE
Redroom Audio also has another nice freebie, "Snaps Claps Slaps Stomps & Shouts"
A 24-piece mixed choir performing a variety of vocal and body effects. It's HERE