The Replacements were an American rock band formed in Minneapolis, Minnesota in 1979. Initially a punk rock band, they are considered pioneers of alternative rock. The band was composed of the guitarist and vocalist Paul Westerberg, guitarist Bob Stinson, bass guitarist Tommy Stinson and drummer Chris Mars for most of its career. Following several acclaimed albums, including Let It Be and Tim, Bob Stinson left the band in 1986, and Slim Dunlap joined as lead guitarist.

The Replacements' history began in Minneapolis in 1978, when nineteen-year-old Bob Stinson gave his eleven-year-old brother Tommy Stinson a bass guitar to keep him off the streets. That year Bob met Mars, a high school dropout. With Mars playing guitar and then switching to drums, the trio called themselves "Dogbreath" and began covering songs by Aerosmith, Ted Nugent and Yes without a singer. One day as Westerberg, a janitor in U.S. Senator David Durenberger's office, was walking home from work, he heard a band playing in the Stinsons' house. After being impressed by the band's performance, Westerberg regularly listened in after work. Mars knew Westerberg and invited him over to jam. Westerberg was unaware Mars drummed in Dogbreath.  Dogbreath auditioned several vocalists, including a hippie who read lyrics off a sheet. The band eventually found a vocalist, but Westerberg wanted to be the singer and took him aside one day to say, "The band doesn't like you." The vocalist soon left and Westerberg replaced him. Before Westerberg joined the band, Dogbreath often drank and took various drugs during rehearsals, playing songs as an afterthought. In contrast to the rest of the band, the relatively disciplined Westerberg appeared at rehearsals in neat clothes and insisted on practicing songs until he was happy with them.  After the band members discovered first-generation English punk bands like the Clash, the Jam, the Damned and the Buzzcocks, Dogbreath changed its name to the Impediments and played a drunken performance without Tommy Stinson at a church hall gig in June 1980. After being banned from the venue for disorderly behavior, they changed the name to the Replacements. In an unpublished memoir, Mars later explained the band's choice of name: "Like maybe the main act doesn't show, and instead the crowd has to settle for an earful of us dirtbags....It seemed to sit just right with us, accurately describing our collective 'secondary' social esteem".

How did they find the rest of themembers
With Mars playing guitar and then switching to drums, the trio called themselves "Dogbreath"