Conversation so far:
What is Gong 'proper'?
new electric Gong band in Paris.
Did they release any albums?
Magick Brother.
When did they release Magick Brother?
October.
What year was this?
1969.
Did the album win any awards?
CANNOTANSWER.
Did the band tour in support of this album?
The re-born Gong played its debut gig at the BYG Actuel Festival in the small Belgian town of Amougies.

Question: When was the gig?
Self-contained rewrite: When was the debut gig at the BYC Actuel Festival in the small Belgian town of Amougies??