Danzón is the official musical genre and dance of Cuba. It is an older Cuban style, typically played with 3 violins, vocals plus coro, timbales, piano, bass, guiro, and conga. It is usually fairly 'gentle' sounding. Written in 2/4 time, the danzon is a slow, formal partner dance, requiring set footwork around syncopated beats and incorporating elegant pauses while the couples stand listening to virtuoso instrumental passages, as characteristically played by a charanga or tipica ensemble.
This description uses material from the Wikipedia article Danzón, which is released under the Creative Commons Attribution-Share-Alike License 3.0.