Do you know this app MoviePro : Video Recorder? It is a very good app for recording live music. You can adjust the recording volume while recording live. MoviePro is one of the most powerful video recording & film making app with innumerable options as seen on AppAdvice, TUAW, Mashable, Bloomberg Radio, Indiewire, Slashgear, Dailynews, Boingboing, iMore, 148apps, iClarified, and now coupled with inbuilt video editing capabilities.
For all topics in the field of Web design, Video Production & Social Media.