on Memory Bliss" by P.M. Dawn. Other changes would also largely impact the Hot 100 in the future, consisting of radio-only songs being able to chart in 1998, and YouTube views playing part of how a Hot 100 is decided in 2013. In December 2019, Eldridge Industries' Valence Media, the current parent company of Billboard, acquired Nielsen's music data business, reuniting it with Billboard for the first time since its spin-off to E5 Global Media from Nielsen Business Media. It was renamed MRC Data in 2020 after Eldridge Industries merged Valence with the film and television studio MRC. and was then brought under its PMRC joint venture with Penske Media Corporation as P-MRC Data. It was renamed once more to Luminate Data in March 2022. In August 2022, the MRC merger was unwound, with Eldridge Industries taking sole ownership of its stake in PMRC. Tracking 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 Music are that the store has Internet access and a point of sale (POS) inventory system. Submission of sales data 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 every Monday and made available to subscribers every Wednesday. Anyone selling a music product with its own UPC or ISRC may register that product to be tracked by Luminate. Sales calculation Not all retailers participate in the SoundScan program, so total CD sales are projected from the collected data using a statistical calculation called "weighting". This assigns a multiplier to each category of stores, to compensate for the number of similar stores not covered by the sampling program. Sales in each category are multiplied accordingly. Such a system is vulnerable to exploitation if it is known which stores are included in the sampling program. To inflate their reported chart sales, some indie labels were reported to purposefully target stores in the program for on-site sales promotions. Also, other labels were found shipping boxes of their CDs to be scanned by complicit retailers in the program. Impact The incorporation of SoundScan tracking by the Billboard charting system was cited by the industry as a possible cause of