Audio Sanctum tags every instrument audible anywhere in a track, and lists the 24 that carry three or more pieces — piano, strings, choir, voice, flute, synth, cello, duduk and shakuhachi among them. Every track is directly licensed for YouTube, and a copyright claim on a video using one is resolved from your Audio Sanctum account. For the instrument that leads a piece rather than merely appears somewhere in it, use Main Instrument.
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