"'Content Detection Days (for Bruce Nauman)' presents a series of eight popular audio tracks which have each been altered for the purposes of deceiving copyright detection software. Each track employs a different method of content alteration which is known to avoid algorithmic content control. These tactics are regularly used by individuals on the Internet uploading music to YouTube or other sources. "

Pitch Lowered 6 Percent
Speed Decreased by 9 Percent
Second Layer of White Noise
Audio Removed Until Final 165 Seconds
Tempo Increased by 9 Percent Preserving Pitch
Left and Right Channels of Stereo Audio Played Back Out of Sync
Pitch Lowered 25 Percent
Tempo Reduced 18 Percent Preserving Pitch

Link: Institute of Contemporary Arts : Exhibitions : SOUNDWORKS