TIL that you can use an iOS device connected to an OS X device as an audio input, as described here:
What the article doesn't say is that you'll need to use some kind of app with an input monitor to actually listen to the audio coming from your iPhone/iPad. Open up Quicktime Player, choose 'New Audio Recording' and make sure your device is selected in the pulldown next to the red record button. If you play audio from your iOS device you should now hear it in QT.
Here are some fantastic, royalty free junk percussion samples: http://waveforms.fairlyconfusing.net/2014/03/junk-percussion.html
I'm Andy Chase, a #banjoist from the northeast of the US. I play mostly 5-string music from the 19th and early-20th century, plus other diversions.
SoNoMu = Sound Noise Music. We are invite-only instance for musicians, sound-artists, producers of any kind of aural noise, songwriters, bedroom producers, sonic manglers and algorave livecoders. More about us....