genres and is present in them. Thus, other types of popular Cuban music and other Latin styles of music continue using the essential style of the son. Another important contribution of the son was the introduction of the drum to mainstream music. The increase in popularity of the son unveiled the potential of music with Afro-Cuban rhythms. This led to the development and mass distribution of newer types of Latin music. Additionally, genres of the later 1940s such as mambo manifest many characteristics derived from son. Charanga orchestras, also developed dance music heavily influenced by son. Perhaps the most significant contribution of son is its influence on present day Latin music. Son is specifically considered to be the foundation on which salsa was created. Although the "classic son" continues to be a very important musical foundation for all kinds of Latin music, it is no longer a popular music genre in Cuba. Younger generations of Cubans prefer the faster, dance-oriented son-derivatives such as timba or salsa. Older generations continue to preserve the son as one of the music genres they listen to, specifically in Oriente, where they tend to maintain more traditional versions of the son compared to Havana. The demise of the USSR (Cuba's major economic mainstay) in 1991 forced Cuba to encourage tourism to attract sorely needed foreign currency. Along with tourism, music became one of Cuba's major assets. The Buena Vista Social Club album and film as well as a stream of CDs triggered a worldwide Cuban music boom. In addition to the original Buena Vista Social Club album, there has been a stream of solo CDs by the members of the "Club". These individuals were subsequently offered individual contracts, ensuring a continued flow of CDs that include many original Cuban son classics. Thanks to the Buena Vista Social Club album, film, and follow-up solo albums there has been a revival of the traditional son and a rediscovery of older son performers who had often fallen by the wayside. Although most Cubans don’t see the value of the Buena Vista Social Club album and feel it doesn't represent present-day Cuba, it has introduced the Cuban son to younger generations of people from around the world who had never heard of son. It has also introduced foreign audiences to an important part of Cuban music history. Instrumentation The basic son ensemble of early 20th-century Havana consisted of guitar,