Piracy is the biggest ghost for the recording industry worldwide. This has been going on since time immemorial. For large in 70-80s may still experience how until the mid-80s, we can be sure all tapes western songs circulated by record companies in the country is pirated results.
For local tracks its own fate is no better, for example, Bimbo, which until now could not own the copyright to most of his songs because of back and forth losing in court against the record company.
The presence of the digital era increasingly memperbuas circulation of pirated music is. Pioneered by Napster, which is one of the founder, played by Justin Timberlake in the film Social Network, exchange services and start rampant illegal downloading songs.