Arrangement is how a piece is scored: instrumental, instruments and voice, or voice only. Every track in the Audio Sanctum library is one of the three. Every track is directly licensed for YouTube, and a copyright claim on a video using one is resolved from your Audio Sanctum account. It answers the first question most editors have — whether there should be singing over the picture or not.
Take a look and search our full library for meaningful music you always wanted to find.