West Coast Swing (WCS) is a partner dance with roots in Lindy Hop. It is characterized by a distinctive elastic look that results from its basic extension-compression technique of partner connection, and is danced primarily in a slotted area on the dance floor. The dance allows for both partners to improvise steps while dancing together, putting West Coast Swing in a short list of dances that put a premium on improvisation. (source: wikipedia)
WCS is danced to 4/4 music typically from 80-120bpm. It can be danced to a wide variety of styles. Traditionally danced to blues or soul, but also perfect for pop, R&B, country, contemporary and even foxtrot, rumba, and rap music.
For more videos, check out the DanceMaven YouTube channel
WCS dance bands
Great articles on West Coast Swing:
Learning to Wait: How West Coast Swing Dancing Taught Me Patience
More info on West Coast Swing:
World Swing Dance Council website