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.
What year was this when Gong's album Magick Brother was released?
Magick Brother is the debut studio album by the progressive rock band Gong released in March 1970 on the French BYG Actuel label.
Did the album Magick Brother by Gong win any awards?
Did the Gong band tour in support of their album Magick Brother?
The re-born Gong played its debut gig at the BYG Actuel Festival in the small Belgian town of Amougies, on 27 October 1969

Question: When was the gig?
Self-contained rewrite: When was the debut gig at the BYG Actuel Festival for the band Gong?