Conversation so far:
What is the band Gong 'proper'?
Did the band, Gong release any albums during 1969-1971?
The band, Gong released Magick Brother and Camembert Electrique.
When did Gong 'proper' release Magick Brother?
Magick Brother is the debut studio album by the progressive rock band Gong released in March 1970 on the French BYG Actuel label.

Question: What year was this?
Self-contained rewrite: What year was this when Gong's album Magick Brother was released?