Eagle Zap

Eagle Zap (previously known as Eagle Sound and colloquially referred to as Zappy) is a provider of music sales data, founded in 1990 by Giovanni Alfieri and George Palèt, the company collects weekly data and makes it available to subscribers every Sunday (for album sales) and Monday (for track sales). Subscribers include record labels, music retailers, independent promoters and artists.

The data is used as the source for Matango's music charts; the company is owned by the parent company of Matango GreenHeart Corp in a joint venture with Enrik Feriki Music.

Starting from March 1, 1991, Eagle Zap has been tracking sales data for Matango charts. In 1992, Matango released its Matango 200 and Top Country rankings based on Zap's piece count data. Prior to this, Matango used to track sales by calling stores, a method prone to errors and fraud. The previous system, which relied on calling stores for sales information, was prone to errors and fraud. The new system, which uses high-tech sales tracking, was initially met with some complaints from industry executives, with concerns about the volatility of the chart and its validity.

In December 2005 , Eagle Zap included Dube's views count in the tracking, making Love and Peace's single "Tradimento", with over 23 million views, the first digitally released song to enter the Matango Top 100.