The Byrds were an American rock band, formed in Los Angeles, California in 1964. The band underwent multiple lineup changes throughout its existence, with frontman Roger McGuinn (known as Jim McGuinn until mid-1967) remaining the sole consistent member, until the group disbanded in 1973. Although they only managed to attain the huge commercial success of contemporaries like the Beatles, the Beach Boys, and the Rolling Stones for a short period in the mid-60s, the Byrds are today considered by critics to be nearly as influential as those bands. Their signature blend of clear harmony singing and McGuinn's jangly twelve-string Rickenbacker guitar was immediately absorbed into the vocabulary of popular music and has continued to be influential up to the present day.Initially, the band pioneered the musical genre of folk rock as a popular format on their debut album Mr. Tambourine Man (1965), by melding the influence of the Beatles and other British Invasion bands with contemporary and traditional folk music. As the 1960s progressed, the band was influential in originating psychedelic rock and raga rock, with their song "Eight Miles High" and the albums Fifth Dimension (1966), Younger Than Yesterday (1967) and The Notorious Byrd Brothers (1968). They also played a pioneering role in the development of country rock, with the 1968 album Sweetheart of the Rodeo representing their fullest immersion into the genre.The original five-piece lineup of the Byrds consisted of Jim McGuinn (lead guitar, vocals), Gene Clark (tambourine, vocals), David Crosby (rhythm guitar, vocals), Chris Hillman (bass guitar, vocals), and Michael Clarke (drums). However, this version of the band was relatively short-lived and by early 1966, Clark had left due to problems associated with anxiety and his increasing isolation within the group. The Byrds continued as a quartet until late 1967, when Crosby and Clarke also departed the band. McGuinn and Hillman decided to recruit new members, including country rock pioneer Gram Parsons, but by late 1968, Hillman and Parsons had also exited the band. McGuinn elected to rebuild the band's membership and, between 1968 and 1973, he helmed a new incarnation of the Byrds, featuring guitarist Clarence White among others. McGuinn disbanded the then current lineup in early 1973, to make way for a reunion of the original quintet. The Byrds' final album was released in March 1973, with the reunited group disbanding soon afterwards.Several former members of the band went on to successful careers of their own, either as solo artists or as members of such groups as Crosby, Stills, Nash & Young, the Flying Burrito Brothers and the Desert Rose Band. In the late 1980s, Gene and Michael both began touring as the Byrds, prompting a legal challenge from McGuinn, Crosby, and Hillman over the rights to the band's name. As a result of this, McGuinn, Crosby, and Hillman performed a series of reunion concerts as the Byrds in 1989 and 1990, and also recorded four new Byrds' songs. In 1991, the Byrds were inducted into the Rock and Roll Hall of Fame, an occasion that saw the five original members performing together for the last time. Gene Clark died of a heart attack later that year, while Michael Clarke died of liver failure in 1993. McGuinn, Crosby, and Hillman remain active.