There are 6 different groups with this name: 1.) Halloween, an American heavy metal band that formed in 1984. They bill themselves as Detroit's Horror Show. Their carrer spans from 1983 to date. www.halloweentheband.us 2) Italian heavy metal band (1981-1987). 3.) Halloween, a French symphonic prog band. They existed between 1988-2002 and recorded 5 albums. http://www.progarchives.com/artist.asp?id=143 4.) Halloween, an obscure 70's Disco-Band. They only recorded one album, "Come See What's It All About".