The term "crossover" has been used to describe music that deliberately mixes genres. A more common term for this phenomenon is "fusion". Examples include jazz fusion, Celtic fusion and worldbeat. An example of crossover of jazz and classical music is the Danish 7-piece chamber orchestra Mad Cows Sing, which fuses composed and improvised music. Other examples of crossover in music are bands that play a mix of genres such as funk, rap, rock, metal and/or punk Read more on Last.fm.