Mambo NYon2 festivals and congresses

Original evolution from the 1960s Mambo era when Cuban music is introduced to New York due to influx of Cuban dissidents and migrants, the New York Salsa (NY Salsa) has its own evolutionary path as old Mambo (Mambo Tipico) is fused with New York jazz and swing to create a new salsa genre. In New York, the dance is strictly On 2, although dancers around the world often integrate elements and repertoire from New York into their dancing On 1.

On 2 timing emphasizes the conga drum's tumbao pattern, and encourages the dancer to listen to percussive elements of the music. Advocates of New York Style consider this to more accurately reflect the Afro-Cuban ancestry of the music.

Many also refer to this style as "Mambo" since it breaks on beat 2 of the measure, though there are other dance forms with a more legitimate claim to that name. See (Mambo.) Mambo has been taught in ballroom schools throughout the world since the 1950s in which the music was originally Cuban in origin. For years ballroom competitions have featured Mambo as a competition dance. N.Y. style salsa therefore, has dominated Mambo and Salsa competitions over the years, although other styles are gaining respect and are sometimes danced as alternate competition categories.

The etiquette of New York style is strict about remaining in the "slot" and avoiding traveling.

New York style tends to place a greater emphasis on performing "shines" where dancers separate and dance solo for a time, suspected origins from Swing and New York tap.

New York style dancers are typically very serious about the musicality and timing of their dancing. To satisfy their tastes, "socials" are often held that cater to almost exclusively playing "salsa dura" (lit. "Hard Salsa")[citation needed]. This is mid-to-up-tempo salsa with an emphasis on percussion and band orchestration rather than the vocals.

Source:
http://en.wikipedia.org/wiki/Salsa_%28dance%29