Downtempo

Sometimes referred to as "chill out", "chill" or "downbeat", downtempo music is a type of electronic music style similar to ambient music, but usually with a beat or groove. Sometimes the beat can be restrained and/or simple. Sometimes the beats are more complicated and more featured instead of being in the background, but even then they are usually less intense than other kinds of electronic music like trance and house. The tempo is often slower than that of traditional electronic dance music. Due to the relaxing and often sensual or romantic feel of most downtempo music, it is a popular form of background music in 'chill out rooms' of dance parties, and many alternative cafes.

Associated Sub-Genres: Acid Jazz, Balearic Beat, Chill Out, Dub Music, Dubtronica, Ethnic Electronica, Moombahton, New Age Music, New Jazz, Trip Hop

Source: http://en.wikipedia.org/wiki/Downtempo