Psychedelic rock in the context of "Buffalo Springfield"

Heavy metal (or simply metal) is a genre of rock music that developed in the late 1960s and early 1970s, largely in the United Kingdom and United States. With roots in blues rock, psychedelic rock and acid rock, heavy metal bands developed a thick, monumental sound characterized by distorted guitars, extended guitar solos, emphatic beats and loudness.

In 1968, three of the genre's most famous pioneers – British bands Led Zeppelin, Black Sabbath and Deep Purple – were founded. Though they came to attract wide audiences, they were often derided by critics. Several American bands modified heavy metal into more accessible forms during the 1970s: the raw, sleazy sound and shock rock of Alice Cooper and Kiss; the blues-rooted rock of Aerosmith; and the flashy guitar leads and party rock of Van Halen. During the mid-1970s, Judas Priest helped spur the genre's evolution by discarding much of its blues influence, while Motörhead introduced a punk rock sensibility and an increasing emphasis on speed. Beginning in the late 1970s, bands in the new wave of British heavy metal such as Iron Maiden and Saxon followed in a similar vein. By the end of the decade, heavy metal fans became known as "metalheads" or "headbangers". The lyrics of some metal genres became associated with aggression and machismo, an issue that has at times led to accusations of misogyny.

Freakbeat is a loosely defined subgenre of rock music developed mainly by harder-driving British mod groups during the British Invasion and Swinging London period of the mid-to late 1960s. The genre bridges R&B, beat and early psychedelia.

Hard rock or heavy rock is a heavier subgenre of rock music typified by aggressive vocals and distorted electric guitars. Hard rock began in the mid-1960s with the garage, psychedelic and blues rock movements. Some of the earliest hard rock music was produced by the Kinks, the Who, the Beatles, the Rolling Stones, Cream, Vanilla Fudge, and the Jimi Hendrix Experience. In the late 1960s, bands such as Blue Cheer, the Jeff Beck Group, Iron Butterfly, Led Zeppelin, Creedence Clearwater Revival, Golden Earring, Steppenwolf, Grand Funk Railroad, Free, and Deep Purple also produced hard rock.

The genre developed into a major form of popular music in the 1970s, with the Who, Led Zeppelin and Deep Purple being joined by Black Sabbath, Alice Cooper, Aerosmith, Kiss, Queen, AC/DC, Thin Lizzy and Van Halen. During the 1980s, some hard rock bands moved away from their hard rock roots and more towards pop rock. Established bands made a comeback in the mid-1980s and hard rock reached a commercial peak in the 1980s with glam metal bands such as Mötley Crüe, Bon Jovi and Def Leppard as well as the rawer sounds of Guns N' Roses which followed with great success in the later part of that decade.

Acid rock is a loosely defined type of rock music that evolved out of the mid-1960s garage punk movement and helped launch the psychedelic subculture. While the term has sometimes been used interchangeably with "psychedelic rock", acid rock also specifically refers to a more musically intense, rawer, or heavier subgenre or sibling of psychedelic rock. Named after lysergic acid diethylamide (LSD), the style is generally defined by heavy, distorted guitars and often contains lyrics with drug references and long improvised jams.

Compared to other forms of psychedelic rock, acid rock features a harder, louder, heavier, or rawer sound. Much of the style overlaps with 1960s garage punk, proto-metal, and early heavy, blues-based hard rock. It developed mainly from the American West Coast, where groups did not focus on the novelty recording effects or whimsy of British psychedelia; instead, the subgenre emphasized the heavier qualities associated with both the positive and negative extremes of the psychedelic experience.

Psychedelic music (sometimes called psychedelia) is a wide range of popular music styles and genres influenced by 1960s psychedelia, a subculture of people who used psychedelic drugs such as DMT, LSD, mescaline, and psilocybin mushrooms, to experience synesthesia and altered states of consciousness. Psychedelic music may also aim to enhance the experience of using these drugs and has been found to have a significant influence on psychedelic therapy.

Psychedelia embraces visual art, movies, and literature, as well as music. Psychedelic music emerged during the 1960s among folk and rock bands in the United States and the United Kingdom, creating the subgenres of psychedelic folk, psychedelic rock, acid rock, and psychedelic pop before declining in the early 1970s. Numerous spiritual successors followed in the ensuing decades, including progressive rock, krautrock, and heavy metal. Since the 1970s, revivals have included psychedelic funk, neo-psychedelia, and stoner rock as well as psychedelic electronic music genres such as acid house, trance music, and new rave.

The Rolling Stones are an English rock band formed in London in 1962. Active for over six decades, they are one of the most popular, influential, and enduring bands of the rock era. In the early 1960s, the band pioneered the gritty, rhythmically driven sound that came to define hard rock. Their first stable line-up consisted of vocalist Mick Jagger, guitarist Keith Richards, multi-instrumentalist Brian Jones, bassist Bill Wyman, and drummer Charlie Watts, after pianist Ian Stewart was side-lined by their manager Andrew Loog Oldham. During their early years, Jones was the primary leader. Oldham encouraged them to write their own songs. The Jagger–Richards partnership soon became the band's primary songwriting and creative force.

Rooted in blues and early rock and roll, the Rolling Stones started out playing cover versions and were at the forefront of the British Invasion in 1964, becoming identified with the youthful counterculture of the 1960s. They then found greater success with their own compositions: "(I Can't Get No) Satisfaction", "Get Off of My Cloud" (both 1965) and "Paint It Black" (1966) became international number-one hits. Aftermath (1966), their first album to be entirely of original material, is often considered to be the most important of their early albums. In 1967, they had the double-sided hit "Ruby Tuesday"/"Let's Spend the Night Together" and experimented with psychedelic rock on Their Satanic Majesties Request. By the end of the 1960s, they had returned to their rhythm and blues-based rock sound, with hit singles "Jumpin' Jack Flash" (1968) and "Honky Tonk Women" (1969), and albums Beggars Banquet (1968), featuring "Sympathy for the Devil" and "Street Fighting Man", and Let It Bleed (1969), featuring "You Can't Always Get What You Want" and "Gimme Shelter".

MC5 (also known as the Motor City Five) was an American rock band formed in Lincoln Park, Michigan, in 1963. The classic lineup consisted of vocalist Rob Tyner, guitarists Wayne Kramer and Fred "Sonic" Smith, bassist Michael Davis, and drummer Dennis Thompson. MC5 were listed by Parade as one of the best rock bands of all time and by VH1 as one of the greatest hard rock artists of all time.The band's first three albums are regarded by many as staples of rock music, and their 1969 song "Kick Out the Jams" is widely covered.

"Crystallizing the counterculture movement at its most volatile and threatening", according to AllMusic critic Stephen Thomas Erlewine, MC5's leftist political ties and anti-establishment lyrics and music positioned them as emerging pioneers of the punk movement in the United States. Their loud, energetic style of back-to-basics rock and roll included elements of garage rock, hard rock, blues rock, and psychedelic rock. Rage Against the Machine guitarist Tom Morello described MC5 as having "basically invented punk rock."

Sly and the Family Stone was an American band formed in San Francisco, California, in 1966 and active until 1983. Their work, which blended elements of funk, soul, psychedelic rock, gospel, and R&B, became a pivotal influence on subsequent American popular music. Their core line-up was led by singer-songwriter, producer, and multi-instrumentalist Sly Stone, and included Stone's siblings Freddie Stone (guitar, vocals) and Rose Stone (keyboard, vocals) alongside Cynthia Robinson (trumpet, vocals), Greg Errico (drums), Jerry Martini (saxophone), and Larry Graham (bass, vocals). The band was the first major American rock group to have a racially integrated, mixed-gender lineup.

Formed in 1966, the group synthesized a variety of musical genres to pioneer the emerging "psychedelic soul" sound. They released a series of Top 10 Billboard Hot 100 hits such as "Dance to the Music" (1968), "Everyday People" (1968), “Hot Fun in the Summertime” (1969), and "Thank You (Falettinme Be Mice Elf Agin)" (1969), as well as critically acclaimed albums such as Stand! (1969), which combined pop sensibility with social commentary. In the 1970s, it transitioned into a darker and less commercial funk sound on releases such as There's a Riot Goin' On (1971) and Fresh (1973), proving as influential as their early work. By 1975, drug problems and interpersonal clashes led to dissolution, though Sly continued to record and tour with a new rotating lineup under the name "Sly and the Family Stone" until drug problems forced his effective retirement in 1987.

Parliament-Funkadelic (abbreviated as P-Funk) is an American music collective of rotating musicians headed by George Clinton, primarily consisting of the funk bands Parliament and Funkadelic, both active since the 1960s. With an eclectic style drawing on psychedelia, outlandish fashion, and surreal humor, they have released albums such as Maggot Brain (1971), Mothership Connection (1975), and One Nation Under a Groove (1978) to critical praise, and scored charting hits with singles such as "Tear the Roof Off the Sucker" (1975) and "Flash Light" (1978). Overall, the collective achieved thirteen top ten hits in the American R&B music charts between 1967 and 1983, including six number one hits. Their work has had an influential effect on subsequent funk, post-punk, hip-hop, and techno artists of the 1980s and 1990s, while their collective mythology has helped pioneer Afrofuturism.

The collective's origins date back to the doo-wop group the Parliaments, formed by Clinton during the late 1950s in suburban New Jersey. By the late 1960s, Clinton had gained experience as a producer-writer for Motown Records and, inspired by artists such as Jimi Hendrix, Sly Stone, and Frank Zappa, he relocated to Detroit and enlisted musicians from his New Jersey days in his own two sister bands Parliament and Funkadelic; the first would go on to develop a commercially successful style of science fiction–inspired funk, while the second pursued a heavier sound which blended funk with psychedelic rock. The name "Parliament-Funkadelic" became the catch-all term for the dozens of related musicians recording and touring different projects in Clinton's orbit, including the female vocal spinoff groups the Brides of Funkenstein and Parlet. Financial and label issues slowed the collective's recorded output in the 1980s while Clinton and other members began solo careers, with Clinton also consolidating the collective's multiple projects and touring under names such as George Clinton and the P-Funk All-Stars. In the 1990s, their sound became the chief inspiration for the West Coast hip hop subgenre G-funk.

The Red Hot Chili Peppers are an American rock band formed in Los Angeles in 1982, consisting of Anthony Kiedis (vocals), Flea (bass), John Frusciante (guitar), and Chad Smith (drums). Their music incorporates elements of alternative rock, funk, punk rock, hard rock, hip hop, and psychedelic rock, and have influenced genres including funk metal, rap metal, rap rock, and nu metal. With over 120 million records sold worldwide, the Red Hot Chili Peppers are one of the top-selling bands of all time. They hold the records for most number-one singles on the American Alternative Songs charts (15), most cumulative weeks at number one (91), and most top-ten songs on the Billboard Alternative Songs chart (28). They have won three Grammy Awards, were inducted into the Rock and Roll Hall of Fame in 2012, and in 2022 received a star on the Hollywood Walk of Fame.

The Red Hot Chili Peppers were formed in Los Angeles by Kiedis, Flea, the guitarist Hillel Slovak, and the drummer Jack Irons. Due to commitments to other bands, Slovak and Irons did not play on their 1984 self-titled debut album, which instead featured the guitarist Jack Sherman and the drummer Cliff Martinez. Slovak rejoined for their second album, Freaky Styley (1985), and Irons for their third, The Uplift Mofo Party Plan (1987). Irons left after Slovak died of a drug overdose in June 1988.