Salsa is one of the most popular social dances in the world.The basic Salsa rhythm is quick, quick, slow, quick, quick, slow, in other words, 1, 2, 3, 5, 6 and 7.
Music suitable for dancing ranges from about 150 bpm (beats per minute) to around 250 bpm, although most dancing is done to music somewhere between 160–220 bpm.
L.A. style is danced on 1, in a slot, with a measure of easiness and adaptability to it. It is strongly influenced by the Mambo, Swing, Argentine Tango and Latin Ballroom dancing styles.
New York style is danced in a line similar to LA Style Salsa. However, unlike LA style, it is danced on the second beat of the music (“on 2″), and the follower steps forward on the first measure of the music, not the leader.