Rock music is a form of popular music with a prominent vocal melody accompanied by guitar, drums, and bass. Many styles of rock music also use keyboard instruments such as organ, piano, or synthesizers. Other instruments sometimes utilized in rock include harmonica, violin, flute, banjo and less common stringed instruments such as mandolin and sitar. Rock music usually has a strong back beat, and often revolves around guitar, either electric or acoustic. Rock music has its roots in 1940s and 1950s rock and roll and rockabilly, which evolved from blues, country music and other influences. According to All Music Guide, "In its purest form, Rock & Roll has three chords, a strong, insistent back beat, and a catchy melody. Early rock & roll drew from a variety of sources, primarily blues, R&B, and country, but also gospel, traditional pop, jazz, and folk. All of these influences combined in a simple, blues-based song structure that was fast, danceable, and catchy. In the late 1960s, rock music was blended with folk music to create folk rock, blues to create blues rock and with jazz, to create jazz-rock fusion, and without a time signature to create psychedelic rock. In the 1970s, rock incorporated influences from soul, funk, and latin music. Also in the 1970s, rock developed a number of subgenres, such as soft rock, heavy metal, hard rock, progressive rock, and punk rock.
Alternative goes mainstream (Early-mid 1990s)
- Grunge
By the 1980s, rock was dominated by slick and commercial glam metal, hair metal and arena rock artists. MTV had arrived and promoted this excessive focus on image and style. Disaffected by this, in the mid-1980s, bands in Washington state (particularly in the Seattle area) formed a new style of rock music which sharply contrasted the mainstream rock of the time. The developing genre came to be known as "grunge", a term meaning "dirt" or "filth". The term was perhaps seen as appropriate due to the dirty sound of the music and the unkempt appearance of most musicians. Grunge fused elements of hardcore punk and heavy metal into a single sound, and made heavy use of guitar distortion, fuzz and feedback. The lyrics were typically apathetic and angst-filled, and often concerned themes such as social alienation and entrapment. Although it was also known for its dark humour and parodies of commercial rock.
Bands such as Green River, Soundgarden, the Melvins and Skin Yard pioneered the genre, with Mudhoney becoming the most successful by the end of the decade. However grunge remained largely a local phenomenon until 1991, when Nirvana's album Nevermind broke into the mainstream. Pearl Jam also contributed to this with their album Ten. Both bands were more melodic than their predecessors and were instant sensations worldwide, but they refused to buy in to corporate promotion and marketing mechanisms. During 1991 and 1992, other grunge bands such as Soundgarden, Alice in Chains and L7 gained a wider audience. Commercial rock and metal faded almost completely from the mainstream. While grunge itself can be seen as somewhat limited in range, its influence was felt across many geographic and musical boundaries; many artists who were similarly disaffected with commercial rock music suddenly found record companies and audiences willing to listen, and dozens of disparate acts positioned themselves as alternatives to mainstream music; thus alternative rock emerged from the underground. In early April 1994, grunge took a sudden shift in popularity with the death of Nirvana's frontman Kurt Cobain. Although grunge bands continued to release albums, the genre was rapidly declining in popularity, and by the mid- to late-1990s, many grunge bands had split up, stopped touring, or had changed their musical direction.
