Background: MC5 was an American rock band from Lincoln Park, Michigan, formed in 1964. The original band line-up consisted of vocalist Rob Tyner, guitarists Wayne Kramer and Fred "Sonic" Smith, bassist Michael Davis, and drummer Dennis Thompson. "Crystallizing the counterculture movement at its most volatile and threatening", according to AllMusic critic Stephen Thomas Erlewine, the MC5's leftist political ties and anti-establishment lyrics and music positioned them as emerging innovators of the punk movement in the United States.
Context: The origins of MC5 can be traced to the friendship between guitarists Wayne Kramer and Fred Smith. Friends since their teen years, they were both fans of R&B music, blues, Chuck Berry, Dick Dale, The Ventures, and what would later be called garage rock: they adored any music with speed, energy and a rebellious attitude. Each guitarist/singer formed and led a rock group (Smith's Vibratones and Kramer's Bounty Hunters). As members of both groups left for college or straight jobs, the most committed members eventually united (under Kramer's leadership and the "Bounty Hunters" name) with Billy Vargo on guitar and Leo LeDuc on drums (at this point Smith played bass), and were popular and successful enough in and around Detroit that the musicians were able to quit their day jobs and make a living from the group.  Kramer felt they needed a manager, which led him to Rob Derminer, a few years older than the others, and deeply involved in Detroit's hipster and left-wing political scenes. Derminer originally auditioned as a bass guitarist (a role which he held briefly in 1964, with Smith switching to guitar to replace Vargo and with Bob Gaspar replacing LeDuc), though they quickly realized that his talents could be better used as a lead singer: Though not conventionally attractive and rather paunchy by traditional frontman standards, he nonetheless had a commanding stage presence, and a booming baritone voice that evidenced his abiding love of American soul and gospel music. Derminer renamed himself Rob Tyner (after Coltrane's pianist McCoy Tyner). Tyner also invented their new name, MC5: it reflected their Detroit roots (it was short for "Motor City Five'). In some ways the group was similar to other garage bands of the period, composing soon-to-be historic workouts such as "Black to Comm" during their mid-teens in the basement of the home of Kramer's mother. Upon Tyner's switch from bassist to vocalist, he was initially replaced by Patrick Burrows, however the lineup was stabilised in 1965 by the arrival of Michael Davis and Dennis Thompson to replace Burrows and Gaspar respectively.  The music also reflected Smith and Kramer's increasing interest in free jazz--the guitarists were inspired by the likes of Albert Ayler, Archie Shepp, Sun Ra and late period John Coltrane, and tried to imitate the ecstatic sounds of the squealing, high-pitched saxophonists they adored. MC5 even later opened for a few U.S. midwest shows for Sun Ra, whose influence is obvious in "Starship". Kramer and Smith were also deeply inspired by Sonny Sharrock, one of the few electric guitarists working in free jazz, and they eventually developed a unique interlocking style that was like little heard before: Kramer's solos often used a heavy, irregular vibrato, while Smith's rhythms contained an uncommon explosive energy, including patterns that conveyed great excitement, as evidenced in "Black to Comm" and many other songs.
Question: What year did they form

Answer:
1964,