Is it the 60s?

Another swipe from my hermanito's collection. As soon as he gets internet connection out in his little abode by the lake, he can co-manage this little music thing I have going. We can call it Slobek / Milo..Slolo...Mibek...Slobilo..we'll work it out. Until then, I will pass on his game.

Opossom kind of sounds like a band that was unjustly overlooked in your Sixties anthology and their video confirms it. Other than the sound/mixing quality, you'd have no inkling that they were contemporary.