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Nielsen SoundScan is an information and sales tracking system created by Mike Fine and Mike Shalett. Soundscan is the official method of tracking sales of music and music video products throughout the United States and Canada. Data is collected weekly and made available every Wednesday to subscribers, which include executives from all facets of record companies, publishing firms, music retailers, independent promoters, film and TV, and artist management. SoundScan is the sales source for the Billboard music charts, making it the official source of sales records in the music industry.
Nielsen SoundScan began tracking sales data for Nielsen since March 1, 1991 (jobs Friday). The May 25 issue of Billboard published Billboard 200 and Country Album charts based on SoundScan "piece count data," and the first Hot 100 chart to debut with the system was released on November 30, 1991 (jobs Saturday). Previously, Billboard tracked sales by calling stores across the U.S. and asking about sales - a method that was inherently error-prone and open to outright fraud. Indeed, while transitioning from the calling to tracking methods, the airplay and sales charts (already monitored by Nielsen) and the Hot 100 (then still using the calling system) often did not match (for instance Paula Abdul's Promise of a New Day and Roxette's Fading Like a Flower reached much higher Hot 100 peaks than their actual sales and airplay would have allowed them to).
The Recording Industry Association of America also tracks sales (or more specifically, shipments minus potential returns) on a long-term basis through the RIAA certification system; it has never used either Nielsen SoundScan or the store-calling method.
How Nielsen SoundScan tracks sales 
Sales data from cash registers is collected from 14,000 retail, mass merchant, and non-traditional (on-line stores, venues, digital music services, etc.) outlets in the United States, Canada, UK and Japan.
The requirements for reporting sales to Nielsen SoundScan are that the store has Internet access and a point of sale (POS) inventory system. Submission of sales data to Nielsen SoundScan must be in the form of a text file consisting of all the UPCs sold and the quantities per UPC on a weekly basis. Sales collected from Monday-Sunday or Sunday-Saturday are reported to SoundScan every Monday and made available to SoundScan subscribers every Wednesday.
Nielsen SoundScan clients include:
- All major and many independent labels.
- Distribution companies.
- Artist managers and booking agents.
- Concert promoters and venue owners.
- Online retailers and "digital delivery" companies.
Registering a product to be tracked by SoundScan 
Anyone selling a music product with its own UPC or ISRC may register that product to be tracked by Nielsen SoundScan. Registration is free at this time and simply requires that one completes either the Title Registration or ISRC Registration online. Registration takes approximately 3-5 business days, so it is recommended that the form be submitted at least 2 weeks prior to the product's release date.
Viewing SoundScan data 
SoundScan is a subscription based service with many packages available for varying levels of access. Subscriptions must be negotiated with SoundScan. Billboard publishes music charts on a weekly basis which use SoundScan data, but do not give sales figures.
See also 
- Music recording sales certification
- Best-selling albums in the United States since Nielsen SoundScan tracking began
- DigiListan - Swedish radio programme using Nielsen SoundScan to create its statistics
- "Get Your Mind Right: Underground Vs. Mainstream". HipHopDX. 2008-02-11. Retrieved 2011-01-06.
- S. Craig Watkins, Hip Hop Matters: Politics, Pop Culture, and the Struggle for the Soul of a Movement, Beacon Press, August 15, 2006, ISBN 0-8070-0986-5
- Holden, Stephen (June 5, 1991). "The Pop Life". New York Times