personnel rainer bauer : electric & twelve-string guitar , vocal ulrich leopold : electric & acoustic bass krischke : drums , piano angelika filanda : drums , vocal ella bauer : drums , percussion , vocal uschi obermaier : maracas helge filanda : conga , vocal rerelease information since its debut in 1969 on metronome ( and its concurrent stateside release , the album has been re-issued a total of nine times .