Dutch progressive rock band Focus formed in 1969 and released their debut album the following year, but it was their second album, 1971's MOVING WAVES, that made them famous. It contained the hit "Hocus Pocus," a mostly instrumental tune that alternated between heavy guitar riffs and jokey, yodeling-style wordless vocals that gave it novelty appeal. The original lineup remained together for a couple more albums, but by the mid-'70s, personnel changes and pursuit of a more commercial sound started a downward spiral that ended with Focus's breakup in 1978.