Revivalist artist

A revivalist artist or revivalist band is a musical group, singer, or musician dedicated to reviving interest in a musical genre from an earlier era.
Overview.
Such performers are usually dedicated enthusiasts of a particular musical genre – often a style that is no longer in vogue – and act as evangelists to spread awareness and appreciation of that music to new audiences. Most such acts do this by live performances at a variety of venues.
Unlike tribute acts who are usually dedicated to recreating material associated with just one primary artist (such as Elvis Presley or The Beatles) as a nostalgic entertainment, revivalist artists tend to draw on material from a wide range of artists and writers from the chosen musical genre.
Unlike cover bands who are primarily populist entertainers playing cover versions of popular hit songs to satisfy audience enjoyment of familiar music, revivalist artists usually see themselves as performers with a musical mission to revive a cherished genre. They often draw from a much broader repertoire of music than just the obvious hit songs of an era. Sometimes the mission includes drawing the audience's attention to forgotten or overlooked songs from the genre as well as the better-known hits.
Most revivalist artists focus on performing material only from the original era that they are reviving. They replenish their repertoire by digging deeper in the catalogue of music from their chosen genre. Some artists eventually aspire to write new material in a similar style and become known for their own compositions.