Salsa refers to a fusion of informal dance styles having roots in the Caribbean (especially in Cuba and Puerto Rico), Latin and North America. The dance originated through the mixture of Mambo, Danzn, Guaguanc, Cuban Son, and other typical Cuban dance forms. Salsa is danced to Salsa music. There is a strong African influence in the music as well as the dance.

Salsa is usually a partner dance, although there are recognized solo steps and some forms are danced in groups of couples, with frequent exchanges of partner (Rueda de Casino). Improvisation and social dancing are important elements of Salsa but it appears as a performance dance too.

The name "Salsa" is the Spanish word for sauce, connoting (in American Spanish) a spicy flavor. The Salsa aesthetic is more flirtatious and sensuous than its ancestor, Cuban Son. Salsa also suggests a "mixture" of ingredients, though this meaning is not found in most stories of the term's origin.

Rhythm and steps
Salsa is danced on a core rhythm that lasts for two measures of four beats each. The basic step typically uses three steps each measure. This pattern might be quick-quick-slow, taking two beats to gradually transfer the weight, or quick-quick-quick allowing a tap or other embellishment on the vacant beat. It is conventional in salsa for the two musical measures to be considered as one, so the count goes from 1 to 8 over two musical bars.

Typically the music involves complex African percussion rhythms based around the Son clave or Rumba clave. Music suitable for dancing ranges from slow at about 70 beats per minute to its fastest at around 140 beats per minute though most dancing is done to music somewhere between 80-120 beats per minute.

Use of space
Salsa is a slot or spot dance, i.e. the partners do not need to travel over the dance floor but usually occupy a fixed area of the dance floor, rotating around one another and exchanging places. Traveling is not ruled out but is more used in a staged salsa performance. In a social setting it is bad etiquette to occupy too much floor by traveling.

History
The history of "Salsa" dance is peppered with hearsay and contradiction. Although few would disagree that the music and dance forms originate largely in Cuban Son, most agree that Salsa as we know it today is a North American interpretation of the older forms. New York's Latino community had a vibrant musical and dancing scene throughout the '50s but found limited success with the 'Anglo' mainstream. In the 1970s, adoption of the term "Salsa" reduced the linguistic and cultural barriers to mainstream adoption of Latin music and dance.

The modernization of the Mambo in the 1950s was influential in shaping what would become salsa. There is debate as to whether the dance we call Salsa today originated in Cuba or Puerto Rico. Cuba's influence in North America was diminished after Castro's revolution and the ensuing trade embargo. New York's Latino community was largely Puerto-Rican. Salsa is one of the main dances in both Cuba and Puerto Rico and is known world-wide.

Origin of the salsa steps
The dance steps currently being danced to salsa music come from the son, but were influenced by many other Cuban dances such as Mambo, Cha cha cha, Guaracha, Changu, Palo Monte, Rumba, Abaku, Comparsa and some times even Mozambique. Solo salsa steps are called "Shines", a term taken from Tap dancing. It also integrates swing dances. Salsa can be a heavily improvised dance, taking any form the interpreter wishes. Modern Salsa has elements of Jazz, funk reggae, hip-hop and samba.

Salsa styles
There are many characteristics that may identify a style. There may be different step patterns, different timing of steps, particular movement on the dance floor (ex: slot, circular), dancer preference of turns and moves, attitude, dress code, and others. The presence of one or more of particular elements does not necessarily define a particular style. For example, many styles can be danced "On One" or one style may be danced "On One" or "On Two". The following are the major "recognizable" styles.

• Cuban Style
• Los Angeles Style
• New York Style
• Venezolana (Dominicana) Style
• Colombian Style
• Mambo
• Puerto Rican Style
• La Rueda
• Salsa Disco