There are an endless number of musical genres around the world, all with a fascinating and complex history. Impossible to count them all, most genres are born out of the fusion of two or more ...

Musicians are teaming up more often for several reasons. Hip-hop, the most collaborative music genre, is now America’s most popular too, according to Nielsen, a market-research firm.

Where once popular music could be classified into a few distinct genres — with rock, country, hip-hop, and jazz being the big ones — now there are subgenres of subgenres.

Researchers found that lyrics in each of five popular music genres were becoming more repetitive and charged with negative emotions. Desi Mendoza via Wikimedia Commons In recent years, the growing ...