Bass music (sometimes UK bass) is an umbrella term
that refers to various styles of related electronic dance music
including dubstep,UK garage,drum and bass,bassline,techno,and house,
among others.The phrase began to be used in response to the blending
of sounds between these genres.The key characteristic shared among
these genres are an emphasis on basslines,groove and rhythm.

In 2011, dubstep gained significant traction in the US market, by way of a post-dubstep style known as brostep, with the American producer Skrillex becoming something of a "poster boy" for the scene.In September 2011, a Spin Magazine EDM special referred to brostep as a "lurching and aggressive" variant of dubstep that has proven commercially successful in the United States.Unlike traditional dubstep production styles, which emphasise sub-bass content, brostep accentuates the middle register and features "robotic fluctuations and metal-esque aggression" According to Simon Reynolds, as dubstep gained larger audiences and moved from smaller club-based venues to larger outdoor events, sub-sonic content was gradually replaced by distorted bass riffs that function roughly in the same register as the electric guitar in heavy metal.

The term brostep has been used by some as a slight pejorative descriptor for a style of popular Americanised dubstep.US and Canadian artists often drew inspiration from British brostep producers who tended to work less with sub-bass and more with mid-range sounds such as Caspa and Rusko, and Vex'd.Rusko himself claimed in an interview on BBC Radio 1Xtra that "brostep is sort of my fault, but now I've started to hate it in a way ... It's like someone screaming in your face ... you don't want that."