this is the full size opening theme song to Kamen Rider V3. unlike many US shows, theme songs in Japan can come in two versions, the short minute long one and then a longer 3 minute version. more or less. sometimes they are even longer, like Ultraman Cosmos' theme songs. it has to be a great song to go over 3 minutes. and that's ANY song, not just a tv show. Bruce Springsteen said it best about a "three minute record" and all.
so in honor of the 40th anniversary of Kamen Rider V3, here's the opening song. if you want English subtitles then you have to get the excellent Generation Kikaida DVD sets of V3, they are nothing short of awesome.