quite a rare soundtrack here, it's on ebay :

The Burning Wild Man 7" Japan Anime Moeru Oniisan Rare | eBay (http://www.ebay.com/itm/Burning-Wild-Man-7-Japan-Anime-Moeru-Oniisan-Rare-/250631145788?pt=Music_on_Vinyl&hash=item3a5ac7c93c#ht_873wt_1037)